joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2015 Google Inc. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | #include "GrAtlasTextContext.h" |
| 8 | |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 9 | #include "GrBatch.h" |
| 10 | #include "GrBatchFontCache.h" |
| 11 | #include "GrBatchTarget.h" |
| 12 | #include "GrDefaultGeoProcFactory.h" |
| 13 | #include "GrDrawTarget.h" |
| 14 | #include "GrFontScaler.h" |
| 15 | #include "GrIndexBuffer.h" |
| 16 | #include "GrStrokeInfo.h" |
joshualitt | b7133be | 2015-04-08 09:08:31 -0700 | [diff] [blame] | 17 | #include "GrTextBlobCache.h" |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 18 | #include "GrTexturePriv.h" |
bsalomon | 72e3ae4 | 2015-04-28 08:08:46 -0700 | [diff] [blame^] | 19 | #include "GrVertexBuffer.h" |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 20 | |
| 21 | #include "SkAutoKern.h" |
| 22 | #include "SkColorPriv.h" |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 23 | #include "SkColorFilter.h" |
| 24 | #include "SkDistanceFieldGen.h" |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 25 | #include "SkDraw.h" |
| 26 | #include "SkDrawFilter.h" |
| 27 | #include "SkDrawProcs.h" |
| 28 | #include "SkGlyphCache.h" |
| 29 | #include "SkGpuDevice.h" |
| 30 | #include "SkGr.h" |
| 31 | #include "SkPath.h" |
| 32 | #include "SkRTConf.h" |
| 33 | #include "SkStrokeRec.h" |
| 34 | #include "SkTextBlob.h" |
| 35 | #include "SkTextMapStateProc.h" |
| 36 | |
| 37 | #include "effects/GrBitmapTextGeoProc.h" |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 38 | #include "effects/GrDistanceFieldGeoProc.h" |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 39 | |
| 40 | namespace { |
| 41 | static const size_t kLCDTextVASize = sizeof(SkPoint) + sizeof(SkIPoint16); |
| 42 | |
| 43 | // position + local coord |
| 44 | static const size_t kColorTextVASize = sizeof(SkPoint) + sizeof(SkIPoint16); |
| 45 | |
| 46 | static const size_t kGrayTextVASize = sizeof(SkPoint) + sizeof(GrColor) + sizeof(SkIPoint16); |
| 47 | |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 48 | static const int kMinDFFontSize = 18; |
| 49 | static const int kSmallDFFontSize = 32; |
| 50 | static const int kSmallDFFontLimit = 32; |
| 51 | static const int kMediumDFFontSize = 72; |
| 52 | static const int kMediumDFFontLimit = 72; |
| 53 | static const int kLargeDFFontSize = 162; |
joshualitt | a7c6389 | 2015-04-21 13:24:37 -0700 | [diff] [blame] | 54 | static const int kLargeDFFontLimit = 2 * kLargeDFFontSize; |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 55 | |
| 56 | SkDEBUGCODE(static const int kExpectedDistanceAdjustTableSize = 8;) |
| 57 | static const int kDistanceAdjustLumShift = 5; |
| 58 | |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 59 | static const int kVerticesPerGlyph = 4; |
| 60 | static const int kIndicesPerGlyph = 6; |
| 61 | |
| 62 | static size_t get_vertex_stride(GrMaskFormat maskFormat) { |
| 63 | switch (maskFormat) { |
| 64 | case kA8_GrMaskFormat: |
| 65 | return kGrayTextVASize; |
| 66 | case kARGB_GrMaskFormat: |
| 67 | return kColorTextVASize; |
| 68 | default: |
| 69 | return kLCDTextVASize; |
| 70 | } |
| 71 | } |
| 72 | |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 73 | static size_t get_vertex_stride_df(GrMaskFormat maskFormat, bool useLCDText) { |
| 74 | SkASSERT(maskFormat == kA8_GrMaskFormat); |
| 75 | if (useLCDText) { |
| 76 | return kLCDTextVASize; |
| 77 | } else { |
| 78 | return kGrayTextVASize; |
| 79 | } |
| 80 | } |
| 81 | |
| 82 | static inline GrColor skcolor_to_grcolor_nopremultiply(SkColor c) { |
| 83 | unsigned r = SkColorGetR(c); |
| 84 | unsigned g = SkColorGetG(c); |
| 85 | unsigned b = SkColorGetB(c); |
| 86 | return GrColorPackRGBA(r, g, b, 0xff); |
| 87 | } |
| 88 | |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 89 | }; |
| 90 | |
| 91 | // TODO |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 92 | // Distance field text in textblobs |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 93 | |
joshualitt | dbd3593 | 2015-04-02 09:19:04 -0700 | [diff] [blame] | 94 | GrAtlasTextContext::GrAtlasTextContext(GrContext* context, |
| 95 | SkGpuDevice* gpuDevice, |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 96 | const SkDeviceProperties& properties, |
| 97 | bool enableDistanceFields) |
| 98 | : INHERITED(context, gpuDevice, properties) |
| 99 | , fDistanceAdjustTable(SkNEW_ARGS(DistanceAdjustTable, (properties.gamma()))) { |
joshualitt | b7133be | 2015-04-08 09:08:31 -0700 | [diff] [blame] | 100 | // We overallocate vertices in our textblobs based on the assumption that A8 has the greatest |
| 101 | // vertexStride |
| 102 | SK_COMPILE_ASSERT(kGrayTextVASize >= kColorTextVASize && kGrayTextVASize >= kLCDTextVASize, |
| 103 | vertex_attribute_changed); |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 104 | fCurrStrike = NULL; |
joshualitt | b7133be | 2015-04-08 09:08:31 -0700 | [diff] [blame] | 105 | fCache = context->getTextBlobCache(); |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 106 | |
| 107 | #if SK_FORCE_DISTANCE_FIELD_TEXT |
| 108 | fEnableDFRendering = true; |
| 109 | #else |
| 110 | fEnableDFRendering = enableDistanceFields; |
| 111 | #endif |
| 112 | } |
| 113 | |
| 114 | void GrAtlasTextContext::DistanceAdjustTable::buildDistanceAdjustTable(float gamma) { |
| 115 | |
| 116 | // This is used for an approximation of the mask gamma hack, used by raster and bitmap |
| 117 | // text. The mask gamma hack is based off of guessing what the blend color is going to |
| 118 | // be, and adjusting the mask so that when run through the linear blend will |
| 119 | // produce the value closest to the desired result. However, in practice this means |
| 120 | // that the 'adjusted' mask is just increasing or decreasing the coverage of |
| 121 | // the mask depending on what it is thought it will blit against. For black (on |
| 122 | // assumed white) this means that coverages are decreased (on a curve). For white (on |
| 123 | // assumed black) this means that coverages are increased (on a a curve). At |
| 124 | // middle (perceptual) gray (which could be blit against anything) the coverages |
| 125 | // remain the same. |
| 126 | // |
| 127 | // The idea here is that instead of determining the initial (real) coverage and |
| 128 | // then adjusting that coverage, we determine an adjusted coverage directly by |
| 129 | // essentially manipulating the geometry (in this case, the distance to the glyph |
| 130 | // edge). So for black (on assumed white) this thins a bit; for white (on |
| 131 | // assumed black) this fake bolds the geometry a bit. |
| 132 | // |
| 133 | // The distance adjustment is calculated by determining the actual coverage value which |
| 134 | // when fed into in the mask gamma table gives us an 'adjusted coverage' value of 0.5. This |
| 135 | // actual coverage value (assuming it's between 0 and 1) corresponds to a distance from the |
| 136 | // actual edge. So by subtracting this distance adjustment and computing without the |
| 137 | // the coverage adjustment we should get 0.5 coverage at the same point. |
| 138 | // |
| 139 | // This has several implications: |
| 140 | // For non-gray lcd smoothed text, each subpixel essentially is using a |
| 141 | // slightly different geometry. |
| 142 | // |
| 143 | // For black (on assumed white) this may not cover some pixels which were |
| 144 | // previously covered; however those pixels would have been only slightly |
| 145 | // covered and that slight coverage would have been decreased anyway. Also, some pixels |
| 146 | // which were previously fully covered may no longer be fully covered. |
| 147 | // |
| 148 | // For white (on assumed black) this may cover some pixels which weren't |
| 149 | // previously covered at all. |
| 150 | |
| 151 | int width, height; |
| 152 | size_t size; |
| 153 | |
| 154 | #ifdef SK_GAMMA_CONTRAST |
| 155 | SkScalar contrast = SK_GAMMA_CONTRAST; |
| 156 | #else |
| 157 | SkScalar contrast = 0.5f; |
| 158 | #endif |
| 159 | SkScalar paintGamma = gamma; |
| 160 | SkScalar deviceGamma = gamma; |
| 161 | |
| 162 | size = SkScalerContext::GetGammaLUTSize(contrast, paintGamma, deviceGamma, |
| 163 | &width, &height); |
| 164 | |
| 165 | SkASSERT(kExpectedDistanceAdjustTableSize == height); |
| 166 | fTable = SkNEW_ARRAY(SkScalar, height); |
| 167 | |
| 168 | SkAutoTArray<uint8_t> data((int)size); |
| 169 | SkScalerContext::GetGammaLUTData(contrast, paintGamma, deviceGamma, data.get()); |
| 170 | |
| 171 | // find the inverse points where we cross 0.5 |
| 172 | // binsearch might be better, but we only need to do this once on creation |
| 173 | for (int row = 0; row < height; ++row) { |
| 174 | uint8_t* rowPtr = data.get() + row*width; |
| 175 | for (int col = 0; col < width - 1; ++col) { |
| 176 | if (rowPtr[col] <= 127 && rowPtr[col + 1] >= 128) { |
| 177 | // compute point where a mask value will give us a result of 0.5 |
| 178 | float interp = (127.5f - rowPtr[col]) / (rowPtr[col + 1] - rowPtr[col]); |
| 179 | float borderAlpha = (col + interp) / 255.f; |
| 180 | |
| 181 | // compute t value for that alpha |
| 182 | // this is an approximate inverse for smoothstep() |
| 183 | float t = borderAlpha*(borderAlpha*(4.0f*borderAlpha - 6.0f) + 5.0f) / 3.0f; |
| 184 | |
| 185 | // compute distance which gives us that t value |
| 186 | const float kDistanceFieldAAFactor = 0.65f; // should match SK_DistanceFieldAAFactor |
| 187 | float d = 2.0f*kDistanceFieldAAFactor*t - kDistanceFieldAAFactor; |
| 188 | |
| 189 | fTable[row] = d; |
| 190 | break; |
| 191 | } |
| 192 | } |
| 193 | } |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 194 | } |
| 195 | |
joshualitt | dbd3593 | 2015-04-02 09:19:04 -0700 | [diff] [blame] | 196 | GrAtlasTextContext* GrAtlasTextContext::Create(GrContext* context, |
| 197 | SkGpuDevice* gpuDevice, |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 198 | const SkDeviceProperties& props, |
| 199 | bool enableDistanceFields) { |
| 200 | return SkNEW_ARGS(GrAtlasTextContext, (context, gpuDevice, props, enableDistanceFields)); |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 201 | } |
| 202 | |
joshualitt | dbd3593 | 2015-04-02 09:19:04 -0700 | [diff] [blame] | 203 | bool GrAtlasTextContext::canDraw(const GrRenderTarget*, |
| 204 | const GrClip&, |
| 205 | const GrPaint&, |
| 206 | const SkPaint& skPaint, |
| 207 | const SkMatrix& viewMatrix) { |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 208 | return this->canDrawAsDistanceFields(skPaint, viewMatrix) || |
| 209 | !SkDraw::ShouldDrawTextAsPaths(skPaint, viewMatrix); |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 210 | } |
| 211 | |
joshualitt | 9e36c1a | 2015-04-14 12:17:27 -0700 | [diff] [blame] | 212 | GrColor GrAtlasTextContext::ComputeCanonicalColor(const SkPaint& paint, bool lcd) { |
| 213 | GrColor canonicalColor = paint.computeLuminanceColor(); |
| 214 | if (lcd) { |
| 215 | // This is the correct computation, but there are tons of cases where LCD can be overridden. |
| 216 | // For now we just regenerate if any run in a textblob has LCD. |
| 217 | // TODO figure out where all of these overrides are and see if we can incorporate that logic |
| 218 | // at a higher level *OR* use sRGB |
| 219 | SkASSERT(false); |
| 220 | //canonicalColor = SkMaskGamma::CanonicalColor(canonicalColor); |
| 221 | } else { |
| 222 | // A8, though can have mixed BMP text but it shouldn't matter because BMP text won't have |
| 223 | // gamma corrected masks anyways, nor color |
| 224 | U8CPU lum = SkComputeLuminance(SkColorGetR(canonicalColor), |
| 225 | SkColorGetG(canonicalColor), |
| 226 | SkColorGetB(canonicalColor)); |
| 227 | // reduce to our finite number of bits |
| 228 | canonicalColor = SkMaskGamma::CanonicalColor(SkColorSetRGB(lum, lum, lum)); |
| 229 | } |
| 230 | return canonicalColor; |
| 231 | } |
| 232 | |
| 233 | // TODO if this function ever shows up in profiling, then we can compute this value when the |
| 234 | // textblob is being built and cache it. However, for the time being textblobs mostly only have 1 |
| 235 | // run so this is not a big deal to compute here. |
| 236 | bool GrAtlasTextContext::HasLCD(const SkTextBlob* blob) { |
| 237 | SkTextBlob::RunIterator it(blob); |
| 238 | for (; !it.done(); it.next()) { |
| 239 | if (it.isLCD()) { |
| 240 | return true; |
| 241 | } |
| 242 | } |
| 243 | return false; |
| 244 | } |
| 245 | |
joshualitt | 2a0e9f3 | 2015-04-13 06:12:21 -0700 | [diff] [blame] | 246 | bool GrAtlasTextContext::MustRegenerateBlob(SkScalar* outTransX, SkScalar* outTransY, |
| 247 | const BitmapTextBlob& blob, const SkPaint& paint, |
joshualitt | 53b5f44 | 2015-04-13 06:33:59 -0700 | [diff] [blame] | 248 | const SkMaskFilter::BlurRec& blurRec, |
joshualitt | dbd3593 | 2015-04-02 09:19:04 -0700 | [diff] [blame] | 249 | const SkMatrix& viewMatrix, SkScalar x, SkScalar y) { |
joshualitt | 9e36c1a | 2015-04-14 12:17:27 -0700 | [diff] [blame] | 250 | // If we have LCD text then our canonical color will be set to transparent, in this case we have |
| 251 | // to regenerate the blob on any color change |
| 252 | if (blob.fKey.fCanonicalColor == SK_ColorTRANSPARENT && blob.fPaintColor != paint.getColor()) { |
joshualitt | 2a0e9f3 | 2015-04-13 06:12:21 -0700 | [diff] [blame] | 253 | return true; |
| 254 | } |
| 255 | |
| 256 | if (blob.fViewMatrix.hasPerspective() != viewMatrix.hasPerspective()) { |
| 257 | return true; |
| 258 | } |
| 259 | |
| 260 | if (blob.fViewMatrix.hasPerspective() && !blob.fViewMatrix.cheapEqualTo(viewMatrix)) { |
| 261 | return true; |
| 262 | } |
| 263 | |
joshualitt | 53b5f44 | 2015-04-13 06:33:59 -0700 | [diff] [blame] | 264 | // We only cache one masked version |
| 265 | if (blob.fKey.fHasBlur && |
| 266 | (blob.fBlurRec.fSigma != blurRec.fSigma || |
| 267 | blob.fBlurRec.fStyle != blurRec.fStyle || |
| 268 | blob.fBlurRec.fQuality != blurRec.fQuality)) { |
| 269 | return true; |
| 270 | } |
| 271 | |
| 272 | // Similarly, we only cache one version for each style |
| 273 | if (blob.fKey.fStyle != SkPaint::kFill_Style && |
| 274 | (blob.fStrokeInfo.fFrameWidth != paint.getStrokeWidth() || |
| 275 | blob.fStrokeInfo.fMiterLimit != paint.getStrokeMiter() || |
| 276 | blob.fStrokeInfo.fJoin != paint.getStrokeJoin())) { |
| 277 | return true; |
| 278 | } |
| 279 | |
joshualitt | fcfb9fc | 2015-04-21 07:35:10 -0700 | [diff] [blame] | 280 | // Mixed blobs must be regenerated. We could probably figure out a way to do integer scrolls |
| 281 | // for mixed blobs if this becomes an issue. |
| 282 | if (blob.hasBitmap() && blob.hasDistanceField()) { |
joshualitt | 473ffa1 | 2015-04-22 18:23:15 -0700 | [diff] [blame] | 283 | // Identical viewmatrices and we can reuse in all cases |
| 284 | if (blob.fViewMatrix.cheapEqualTo(viewMatrix) && x == blob.fX && y == blob.fY) { |
| 285 | return false; |
| 286 | } |
joshualitt | 2a0e9f3 | 2015-04-13 06:12:21 -0700 | [diff] [blame] | 287 | return true; |
| 288 | } |
| 289 | |
joshualitt | fcfb9fc | 2015-04-21 07:35:10 -0700 | [diff] [blame] | 290 | if (blob.hasBitmap()) { |
joshualitt | 64c99cc | 2015-04-21 09:43:03 -0700 | [diff] [blame] | 291 | if (blob.fViewMatrix.getScaleX() != viewMatrix.getScaleX() || |
| 292 | blob.fViewMatrix.getScaleY() != viewMatrix.getScaleY() || |
| 293 | blob.fViewMatrix.getSkewX() != viewMatrix.getSkewX() || |
| 294 | blob.fViewMatrix.getSkewY() != viewMatrix.getSkewY()) { |
| 295 | return true; |
| 296 | } |
| 297 | |
joshualitt | fcfb9fc | 2015-04-21 07:35:10 -0700 | [diff] [blame] | 298 | // We can update the positions in the cachedtextblobs without regenerating the whole blob, |
| 299 | // but only for integer translations. |
| 300 | // This cool bit of math will determine the necessary translation to apply to the already |
| 301 | // generated vertex coordinates to move them to the correct position |
| 302 | SkScalar transX = viewMatrix.getTranslateX() + |
| 303 | viewMatrix.getScaleX() * (x - blob.fX) + |
| 304 | viewMatrix.getSkewX() * (y - blob.fY) - |
| 305 | blob.fViewMatrix.getTranslateX(); |
| 306 | SkScalar transY = viewMatrix.getTranslateY() + |
| 307 | viewMatrix.getSkewY() * (x - blob.fX) + |
| 308 | viewMatrix.getScaleY() * (y - blob.fY) - |
| 309 | blob.fViewMatrix.getTranslateY(); |
joshualitt | f0c000d | 2015-04-27 09:36:55 -0700 | [diff] [blame] | 310 | if (!SkScalarIsInt(transX) || !SkScalarIsInt(transY) ) { |
joshualitt | fcfb9fc | 2015-04-21 07:35:10 -0700 | [diff] [blame] | 311 | return true; |
| 312 | } |
| 313 | |
joshualitt | fcfb9fc | 2015-04-21 07:35:10 -0700 | [diff] [blame] | 314 | (*outTransX) = transX; |
| 315 | (*outTransY) = transY; |
joshualitt | a7c6389 | 2015-04-21 13:24:37 -0700 | [diff] [blame] | 316 | } else if (blob.hasDistanceField()) { |
joshualitt | 64c99cc | 2015-04-21 09:43:03 -0700 | [diff] [blame] | 317 | // A scale outside of [blob.fMaxMinScale, blob.fMinMaxScale] would result in a different |
| 318 | // distance field being generated, so we have to regenerate in those cases |
| 319 | SkScalar newMaxScale = viewMatrix.getMaxScale(); |
| 320 | SkScalar oldMaxScale = blob.fViewMatrix.getMaxScale(); |
| 321 | SkScalar scaleAdjust = newMaxScale / oldMaxScale; |
| 322 | if (scaleAdjust < blob.fMaxMinScale || scaleAdjust > blob.fMinMaxScale) { |
| 323 | return true; |
| 324 | } |
| 325 | |
| 326 | (*outTransX) = x - blob.fX; |
| 327 | (*outTransY) = y - blob.fY; |
joshualitt | fcfb9fc | 2015-04-21 07:35:10 -0700 | [diff] [blame] | 328 | } |
joshualitt | a7c6389 | 2015-04-21 13:24:37 -0700 | [diff] [blame] | 329 | // It is possible that a blob has neither distanceField nor bitmaptext. This is in the case |
| 330 | // when all of the runs inside the blob are drawn as paths. In this case, we always regenerate |
| 331 | // the blob anyways at flush time, so no need to regenerate explicitly |
joshualitt | fcfb9fc | 2015-04-21 07:35:10 -0700 | [diff] [blame] | 332 | |
joshualitt | 2a0e9f3 | 2015-04-13 06:12:21 -0700 | [diff] [blame] | 333 | return false; |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 334 | } |
| 335 | |
| 336 | |
joshualitt | dbd3593 | 2015-04-02 09:19:04 -0700 | [diff] [blame] | 337 | inline SkGlyphCache* GrAtlasTextContext::setupCache(BitmapTextBlob::Run* run, |
| 338 | const SkPaint& skPaint, |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 339 | const SkMatrix* viewMatrix, |
| 340 | bool noGamma) { |
| 341 | skPaint.getScalerContextDescriptor(&run->fDescriptor, &fDeviceProperties, viewMatrix, noGamma); |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 342 | run->fTypeface.reset(SkSafeRef(skPaint.getTypeface())); |
| 343 | return SkGlyphCache::DetachCache(run->fTypeface, run->fDescriptor.getDesc()); |
| 344 | } |
| 345 | |
joshualitt | dbd3593 | 2015-04-02 09:19:04 -0700 | [diff] [blame] | 346 | void GrAtlasTextContext::drawTextBlob(GrRenderTarget* rt, const GrClip& clip, |
| 347 | const SkPaint& skPaint, const SkMatrix& viewMatrix, |
| 348 | const SkTextBlob* blob, SkScalar x, SkScalar y, |
| 349 | SkDrawFilter* drawFilter, const SkIRect& clipBounds) { |
joshualitt | 9b8e79e | 2015-04-24 09:57:12 -0700 | [diff] [blame] | 350 | // If we have been abandoned, then don't draw |
| 351 | if (!fContext->getTextTarget()) { |
| 352 | return; |
| 353 | } |
| 354 | |
joshualitt | 2a0e9f3 | 2015-04-13 06:12:21 -0700 | [diff] [blame] | 355 | SkAutoTUnref<BitmapTextBlob> cacheBlob; |
joshualitt | 53b5f44 | 2015-04-13 06:33:59 -0700 | [diff] [blame] | 356 | SkMaskFilter::BlurRec blurRec; |
| 357 | BitmapTextBlob::Key key; |
| 358 | // It might be worth caching these things, but its not clear at this time |
| 359 | // TODO for animated mask filters, this will fill up our cache. We need a safeguard here |
| 360 | const SkMaskFilter* mf = skPaint.getMaskFilter(); |
joshualitt | 2a0e9f3 | 2015-04-13 06:12:21 -0700 | [diff] [blame] | 361 | bool canCache = !(skPaint.getPathEffect() || |
joshualitt | 53b5f44 | 2015-04-13 06:33:59 -0700 | [diff] [blame] | 362 | (mf && !mf->asABlur(&blurRec)) || |
joshualitt | 2a0e9f3 | 2015-04-13 06:12:21 -0700 | [diff] [blame] | 363 | drawFilter); |
| 364 | |
| 365 | if (canCache) { |
joshualitt | 9e36c1a | 2015-04-14 12:17:27 -0700 | [diff] [blame] | 366 | bool hasLCD = HasLCD(blob); |
| 367 | // TODO we want to figure out a way to be able to use the canonical color on LCD text, |
| 368 | // see the note on ComputeCanonicalColor above. We pick a dummy value for LCD text to |
| 369 | // ensure we always match the same key |
| 370 | GrColor canonicalColor = hasLCD ? SK_ColorTRANSPARENT : |
| 371 | ComputeCanonicalColor(skPaint, hasLCD); |
| 372 | |
joshualitt | 53b5f44 | 2015-04-13 06:33:59 -0700 | [diff] [blame] | 373 | key.fUniqueID = blob->uniqueID(); |
| 374 | key.fStyle = skPaint.getStyle(); |
| 375 | key.fHasBlur = SkToBool(mf); |
joshualitt | 9e36c1a | 2015-04-14 12:17:27 -0700 | [diff] [blame] | 376 | key.fCanonicalColor = canonicalColor; |
joshualitt | 53b5f44 | 2015-04-13 06:33:59 -0700 | [diff] [blame] | 377 | cacheBlob.reset(SkSafeRef(fCache->find(key))); |
joshualitt | 2a0e9f3 | 2015-04-13 06:12:21 -0700 | [diff] [blame] | 378 | } |
| 379 | |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 380 | SkIRect clipRect; |
| 381 | clip.getConservativeBounds(rt->width(), rt->height(), &clipRect); |
| 382 | |
joshualitt | 2a0e9f3 | 2015-04-13 06:12:21 -0700 | [diff] [blame] | 383 | SkScalar transX = 0.f; |
| 384 | SkScalar transY = 0.f; |
| 385 | |
joshualitt | 9e36c1a | 2015-04-14 12:17:27 -0700 | [diff] [blame] | 386 | // Though for the time being runs in the textblob can override the paint, they only touch font |
| 387 | // info. |
| 388 | GrPaint grPaint; |
bsalomon | bed83a6 | 2015-04-15 14:18:34 -0700 | [diff] [blame] | 389 | if (!SkPaint2GrPaint(fContext, rt, skPaint, viewMatrix, true, &grPaint)) { |
| 390 | return; |
| 391 | } |
joshualitt | 9e36c1a | 2015-04-14 12:17:27 -0700 | [diff] [blame] | 392 | |
joshualitt | b7133be | 2015-04-08 09:08:31 -0700 | [diff] [blame] | 393 | if (cacheBlob) { |
joshualitt | 53b5f44 | 2015-04-13 06:33:59 -0700 | [diff] [blame] | 394 | if (MustRegenerateBlob(&transX, &transY, *cacheBlob, skPaint, blurRec, viewMatrix, x, y)) { |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 395 | // We have to remake the blob because changes may invalidate our masks. |
| 396 | // TODO we could probably get away reuse most of the time if the pointer is unique, |
| 397 | // but we'd have to clear the subrun information |
joshualitt | b7133be | 2015-04-08 09:08:31 -0700 | [diff] [blame] | 398 | fCache->remove(cacheBlob); |
joshualitt | 53b5f44 | 2015-04-13 06:33:59 -0700 | [diff] [blame] | 399 | cacheBlob.reset(SkRef(fCache->createCachedBlob(blob, key, blurRec, skPaint, |
| 400 | kGrayTextVASize))); |
joshualitt | 9e36c1a | 2015-04-14 12:17:27 -0700 | [diff] [blame] | 401 | this->regenerateTextBlob(cacheBlob, skPaint, grPaint.getColor(), viewMatrix, blob, x, y, |
joshualitt | fcfb9fc | 2015-04-21 07:35:10 -0700 | [diff] [blame] | 402 | drawFilter, clipRect, rt, clip, grPaint); |
joshualitt | b7133be | 2015-04-08 09:08:31 -0700 | [diff] [blame] | 403 | } else { |
joshualitt | 9e36c1a | 2015-04-14 12:17:27 -0700 | [diff] [blame] | 404 | // If we can reuse the blob, then make sure we update the blob's viewmatrix, and x/y |
| 405 | // offsets |
joshualitt | 2a0e9f3 | 2015-04-13 06:12:21 -0700 | [diff] [blame] | 406 | cacheBlob->fViewMatrix = viewMatrix; |
| 407 | cacheBlob->fX = x; |
| 408 | cacheBlob->fY = y; |
joshualitt | b7133be | 2015-04-08 09:08:31 -0700 | [diff] [blame] | 409 | fCache->makeMRU(cacheBlob); |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 410 | } |
| 411 | } else { |
joshualitt | 2a0e9f3 | 2015-04-13 06:12:21 -0700 | [diff] [blame] | 412 | if (canCache) { |
joshualitt | 53b5f44 | 2015-04-13 06:33:59 -0700 | [diff] [blame] | 413 | cacheBlob.reset(SkRef(fCache->createCachedBlob(blob, key, blurRec, skPaint, |
| 414 | kGrayTextVASize))); |
joshualitt | 2a0e9f3 | 2015-04-13 06:12:21 -0700 | [diff] [blame] | 415 | } else { |
| 416 | cacheBlob.reset(fCache->createBlob(blob, kGrayTextVASize)); |
| 417 | } |
joshualitt | 9e36c1a | 2015-04-14 12:17:27 -0700 | [diff] [blame] | 418 | this->regenerateTextBlob(cacheBlob, skPaint, grPaint.getColor(), viewMatrix, blob, x, y, |
joshualitt | fcfb9fc | 2015-04-21 07:35:10 -0700 | [diff] [blame] | 419 | drawFilter, clipRect, rt, clip, grPaint); |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 420 | } |
| 421 | |
joshualitt | 9e36c1a | 2015-04-14 12:17:27 -0700 | [diff] [blame] | 422 | cacheBlob->fPaintColor = skPaint.getColor(); |
joshualitt | 9a27e63 | 2015-04-06 10:53:36 -0700 | [diff] [blame] | 423 | this->flush(fContext->getTextTarget(), blob, cacheBlob, rt, skPaint, grPaint, drawFilter, |
joshualitt | 2a0e9f3 | 2015-04-13 06:12:21 -0700 | [diff] [blame] | 424 | clip, viewMatrix, clipBounds, x, y, transX, transY); |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 425 | } |
| 426 | |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 427 | inline bool GrAtlasTextContext::canDrawAsDistanceFields(const SkPaint& skPaint, |
| 428 | const SkMatrix& viewMatrix) { |
| 429 | // TODO: support perspective (need getMaxScale replacement) |
| 430 | if (viewMatrix.hasPerspective()) { |
| 431 | return false; |
| 432 | } |
| 433 | |
| 434 | SkScalar maxScale = viewMatrix.getMaxScale(); |
| 435 | SkScalar scaledTextSize = maxScale*skPaint.getTextSize(); |
| 436 | // Hinted text looks far better at small resolutions |
| 437 | // Scaling up beyond 2x yields undesireable artifacts |
joshualitt | a7c6389 | 2015-04-21 13:24:37 -0700 | [diff] [blame] | 438 | if (scaledTextSize < kMinDFFontSize || scaledTextSize > kLargeDFFontLimit) { |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 439 | return false; |
| 440 | } |
| 441 | |
| 442 | if (!fEnableDFRendering && !skPaint.isDistanceFieldTextTEMP() && |
| 443 | scaledTextSize < kLargeDFFontSize) { |
| 444 | return false; |
| 445 | } |
| 446 | |
| 447 | // rasterizers and mask filters modify alpha, which doesn't |
| 448 | // translate well to distance |
| 449 | if (skPaint.getRasterizer() || skPaint.getMaskFilter() || |
| 450 | !fContext->getTextTarget()->caps()->shaderDerivativeSupport()) { |
| 451 | return false; |
| 452 | } |
| 453 | |
| 454 | // TODO: add some stroking support |
| 455 | if (skPaint.getStyle() != SkPaint::kFill_Style) { |
| 456 | return false; |
| 457 | } |
| 458 | |
| 459 | return true; |
| 460 | } |
| 461 | |
joshualitt | dbd3593 | 2015-04-02 09:19:04 -0700 | [diff] [blame] | 462 | void GrAtlasTextContext::regenerateTextBlob(BitmapTextBlob* cacheBlob, |
joshualitt | 9e36c1a | 2015-04-14 12:17:27 -0700 | [diff] [blame] | 463 | const SkPaint& skPaint, GrColor color, |
| 464 | const SkMatrix& viewMatrix, |
joshualitt | dbd3593 | 2015-04-02 09:19:04 -0700 | [diff] [blame] | 465 | const SkTextBlob* blob, SkScalar x, SkScalar y, |
joshualitt | fcfb9fc | 2015-04-21 07:35:10 -0700 | [diff] [blame] | 466 | SkDrawFilter* drawFilter, const SkIRect& clipRect, |
| 467 | GrRenderTarget* rt, const GrClip& clip, |
| 468 | const GrPaint& paint) { |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 469 | cacheBlob->fViewMatrix = viewMatrix; |
| 470 | cacheBlob->fX = x; |
| 471 | cacheBlob->fY = y; |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 472 | |
| 473 | // Regenerate textblob |
| 474 | SkPaint runPaint = skPaint; |
| 475 | SkTextBlob::RunIterator it(blob); |
| 476 | for (int run = 0; !it.done(); it.next(), run++) { |
| 477 | int glyphCount = it.glyphCount(); |
| 478 | size_t textLen = glyphCount * sizeof(uint16_t); |
| 479 | const SkPoint& offset = it.offset(); |
| 480 | // applyFontToPaint() always overwrites the exact same attributes, |
| 481 | // so it is safe to not re-seed the paint for this reason. |
| 482 | it.applyFontToPaint(&runPaint); |
| 483 | |
| 484 | if (drawFilter && !drawFilter->filter(&runPaint, SkDrawFilter::kText_Type)) { |
| 485 | // A false return from filter() means we should abort the current draw. |
| 486 | runPaint = skPaint; |
| 487 | continue; |
| 488 | } |
| 489 | |
| 490 | runPaint.setFlags(fGpuDevice->filterTextFlags(runPaint)); |
| 491 | |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 492 | // setup vertex / glyphIndex for the new run |
| 493 | if (run > 0) { |
| 494 | PerSubRunInfo& newRun = cacheBlob->fRuns[run].fSubRunInfo.back(); |
| 495 | PerSubRunInfo& lastRun = cacheBlob->fRuns[run - 1].fSubRunInfo.back(); |
| 496 | |
| 497 | newRun.fVertexStartIndex = lastRun.fVertexEndIndex; |
| 498 | newRun.fVertexEndIndex = lastRun.fVertexEndIndex; |
| 499 | |
| 500 | newRun.fGlyphStartIndex = lastRun.fGlyphEndIndex; |
| 501 | newRun.fGlyphEndIndex = lastRun.fGlyphEndIndex; |
| 502 | } |
| 503 | |
joshualitt | fcfb9fc | 2015-04-21 07:35:10 -0700 | [diff] [blame] | 504 | if (this->canDrawAsDistanceFields(runPaint, viewMatrix)) { |
| 505 | cacheBlob->setHasDistanceField(); |
| 506 | SkPaint dfPaint = runPaint; |
| 507 | SkScalar textRatio; |
joshualitt | 64c99cc | 2015-04-21 09:43:03 -0700 | [diff] [blame] | 508 | this->initDistanceFieldPaint(cacheBlob, &dfPaint, &textRatio, viewMatrix); |
joshualitt | fcfb9fc | 2015-04-21 07:35:10 -0700 | [diff] [blame] | 509 | Run& runIdx = cacheBlob->fRuns[run]; |
| 510 | PerSubRunInfo& subRun = runIdx.fSubRunInfo.back(); |
| 511 | subRun.fUseLCDText = runPaint.isLCDRenderText(); |
| 512 | subRun.fDrawAsDistanceFields = true; |
joshualitt | 9a27e63 | 2015-04-06 10:53:36 -0700 | [diff] [blame] | 513 | |
joshualitt | fcfb9fc | 2015-04-21 07:35:10 -0700 | [diff] [blame] | 514 | SkGlyphCache* cache = this->setupCache(&cacheBlob->fRuns[run], dfPaint, NULL, true); |
| 515 | |
| 516 | SkTDArray<char> fallbackTxt; |
| 517 | SkTDArray<SkScalar> fallbackPos; |
| 518 | SkPoint dfOffset; |
| 519 | int scalarsPerPosition = 2; |
| 520 | switch (it.positioning()) { |
| 521 | case SkTextBlob::kDefault_Positioning: { |
| 522 | this->internalDrawDFText(cacheBlob, run, cache, dfPaint, color, viewMatrix, |
| 523 | (const char *)it.glyphs(), textLen, |
| 524 | x + offset.x(), y + offset.y(), clipRect, textRatio, |
| 525 | &fallbackTxt, &fallbackPos, &dfOffset, runPaint); |
| 526 | break; |
| 527 | } |
| 528 | case SkTextBlob::kHorizontal_Positioning: { |
| 529 | scalarsPerPosition = 1; |
| 530 | dfOffset = SkPoint::Make(x, y + offset.y()); |
| 531 | this->internalDrawDFPosText(cacheBlob, run, cache, dfPaint, color, viewMatrix, |
| 532 | (const char*)it.glyphs(), textLen, it.pos(), |
| 533 | scalarsPerPosition, dfOffset, clipRect, textRatio, |
| 534 | &fallbackTxt, &fallbackPos); |
| 535 | break; |
| 536 | } |
| 537 | case SkTextBlob::kFull_Positioning: { |
| 538 | dfOffset = SkPoint::Make(x, y); |
| 539 | this->internalDrawDFPosText(cacheBlob, run, cache, dfPaint, color, viewMatrix, |
| 540 | (const char*)it.glyphs(), textLen, it.pos(), |
| 541 | scalarsPerPosition, dfOffset, clipRect, textRatio, |
| 542 | &fallbackTxt, &fallbackPos); |
| 543 | break; |
| 544 | } |
| 545 | } |
| 546 | if (fallbackTxt.count()) { |
| 547 | this->fallbackDrawPosText(cacheBlob, run, rt, clip, paint, runPaint, viewMatrix, |
| 548 | fallbackTxt, fallbackPos, scalarsPerPosition, dfOffset, |
| 549 | clipRect); |
| 550 | } |
| 551 | |
| 552 | SkGlyphCache::AttachCache(cache); |
| 553 | } else if (SkDraw::ShouldDrawTextAsPaths(runPaint, viewMatrix)) { |
| 554 | cacheBlob->fRuns[run].fDrawAsPaths = true; |
| 555 | } else { |
| 556 | cacheBlob->setHasBitmap(); |
| 557 | SkGlyphCache* cache = this->setupCache(&cacheBlob->fRuns[run], runPaint, &viewMatrix, |
| 558 | false); |
| 559 | switch (it.positioning()) { |
| 560 | case SkTextBlob::kDefault_Positioning: |
| 561 | this->internalDrawBMPText(cacheBlob, run, cache, runPaint, color, viewMatrix, |
| 562 | (const char *)it.glyphs(), textLen, |
| 563 | x + offset.x(), y + offset.y(), clipRect); |
| 564 | break; |
| 565 | case SkTextBlob::kHorizontal_Positioning: |
| 566 | this->internalDrawBMPPosText(cacheBlob, run, cache, runPaint, color, viewMatrix, |
| 567 | (const char*)it.glyphs(), textLen, it.pos(), 1, |
| 568 | SkPoint::Make(x, y + offset.y()), clipRect); |
| 569 | break; |
| 570 | case SkTextBlob::kFull_Positioning: |
| 571 | this->internalDrawBMPPosText(cacheBlob, run, cache, runPaint, color, viewMatrix, |
| 572 | (const char*)it.glyphs(), textLen, it.pos(), 2, |
| 573 | SkPoint::Make(x, y), clipRect); |
| 574 | break; |
| 575 | } |
| 576 | SkGlyphCache::AttachCache(cache); |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 577 | } |
| 578 | |
| 579 | if (drawFilter) { |
| 580 | // A draw filter may change the paint arbitrarily, so we must re-seed in this case. |
| 581 | runPaint = skPaint; |
| 582 | } |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 583 | } |
| 584 | } |
| 585 | |
joshualitt | 64c99cc | 2015-04-21 09:43:03 -0700 | [diff] [blame] | 586 | inline void GrAtlasTextContext::initDistanceFieldPaint(BitmapTextBlob* blob, |
| 587 | SkPaint* skPaint, |
| 588 | SkScalar* textRatio, |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 589 | const SkMatrix& viewMatrix) { |
| 590 | // getMaxScale doesn't support perspective, so neither do we at the moment |
| 591 | SkASSERT(!viewMatrix.hasPerspective()); |
| 592 | SkScalar maxScale = viewMatrix.getMaxScale(); |
| 593 | SkScalar textSize = skPaint->getTextSize(); |
| 594 | SkScalar scaledTextSize = textSize; |
| 595 | // if we have non-unity scale, we need to choose our base text size |
| 596 | // based on the SkPaint's text size multiplied by the max scale factor |
| 597 | // TODO: do we need to do this if we're scaling down (i.e. maxScale < 1)? |
| 598 | if (maxScale > 0 && !SkScalarNearlyEqual(maxScale, SK_Scalar1)) { |
| 599 | scaledTextSize *= maxScale; |
| 600 | } |
| 601 | |
joshualitt | 64c99cc | 2015-04-21 09:43:03 -0700 | [diff] [blame] | 602 | // We have three sizes of distance field text, and within each size 'bucket' there is a floor |
| 603 | // and ceiling. A scale outside of this range would require regenerating the distance fields |
| 604 | SkScalar dfMaskScaleFloor; |
| 605 | SkScalar dfMaskScaleCeil; |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 606 | if (scaledTextSize <= kSmallDFFontLimit) { |
joshualitt | 64c99cc | 2015-04-21 09:43:03 -0700 | [diff] [blame] | 607 | dfMaskScaleFloor = kMinDFFontSize; |
joshualitt | a7c6389 | 2015-04-21 13:24:37 -0700 | [diff] [blame] | 608 | dfMaskScaleCeil = kSmallDFFontLimit; |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 609 | *textRatio = textSize / kSmallDFFontSize; |
| 610 | skPaint->setTextSize(SkIntToScalar(kSmallDFFontSize)); |
| 611 | } else if (scaledTextSize <= kMediumDFFontLimit) { |
joshualitt | a7c6389 | 2015-04-21 13:24:37 -0700 | [diff] [blame] | 612 | dfMaskScaleFloor = kSmallDFFontLimit; |
| 613 | dfMaskScaleCeil = kMediumDFFontLimit; |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 614 | *textRatio = textSize / kMediumDFFontSize; |
| 615 | skPaint->setTextSize(SkIntToScalar(kMediumDFFontSize)); |
| 616 | } else { |
joshualitt | a7c6389 | 2015-04-21 13:24:37 -0700 | [diff] [blame] | 617 | dfMaskScaleFloor = kMediumDFFontLimit; |
| 618 | dfMaskScaleCeil = kLargeDFFontLimit; |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 619 | *textRatio = textSize / kLargeDFFontSize; |
| 620 | skPaint->setTextSize(SkIntToScalar(kLargeDFFontSize)); |
| 621 | } |
| 622 | |
joshualitt | 64c99cc | 2015-04-21 09:43:03 -0700 | [diff] [blame] | 623 | // Because there can be multiple runs in the blob, we want the overall maxMinScale, and |
| 624 | // minMaxScale to make regeneration decisions. Specifically, we want the maximum minimum scale |
| 625 | // we can tolerate before we'd drop to a lower mip size, and the minimum maximum scale we can |
| 626 | // tolerate before we'd have to move to a large mip size. When we actually test these values |
| 627 | // we look at the delta in scale between the new viewmatrix and the old viewmatrix, and test |
| 628 | // against these values to decide if we can reuse or not(ie, will a given scale change our mip |
| 629 | // level) |
joshualitt | a7c6389 | 2015-04-21 13:24:37 -0700 | [diff] [blame] | 630 | SkASSERT(dfMaskScaleFloor <= scaledTextSize && scaledTextSize <= dfMaskScaleCeil); |
joshualitt | 64c99cc | 2015-04-21 09:43:03 -0700 | [diff] [blame] | 631 | blob->fMaxMinScale = SkMaxScalar(dfMaskScaleFloor / scaledTextSize, blob->fMaxMinScale); |
| 632 | blob->fMinMaxScale = SkMinScalar(dfMaskScaleCeil / scaledTextSize, blob->fMinMaxScale); |
| 633 | |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 634 | skPaint->setLCDRenderText(false); |
| 635 | skPaint->setAutohinted(false); |
| 636 | skPaint->setHinting(SkPaint::kNormal_Hinting); |
| 637 | skPaint->setSubpixelText(true); |
| 638 | } |
| 639 | |
joshualitt | fec19e1 | 2015-04-17 10:32:32 -0700 | [diff] [blame] | 640 | inline void GrAtlasTextContext::fallbackDrawPosText(BitmapTextBlob* blob, |
joshualitt | fcfb9fc | 2015-04-21 07:35:10 -0700 | [diff] [blame] | 641 | int runIndex, |
joshualitt | fec19e1 | 2015-04-17 10:32:32 -0700 | [diff] [blame] | 642 | GrRenderTarget* rt, const GrClip& clip, |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 643 | const GrPaint& paint, |
| 644 | const SkPaint& skPaint, |
| 645 | const SkMatrix& viewMatrix, |
| 646 | const SkTDArray<char>& fallbackTxt, |
| 647 | const SkTDArray<SkScalar>& fallbackPos, |
| 648 | int scalarsPerPosition, |
| 649 | const SkPoint& offset, |
| 650 | const SkIRect& clipRect) { |
joshualitt | fec19e1 | 2015-04-17 10:32:32 -0700 | [diff] [blame] | 651 | SkASSERT(fallbackTxt.count()); |
joshualitt | fcfb9fc | 2015-04-21 07:35:10 -0700 | [diff] [blame] | 652 | blob->setHasBitmap(); |
| 653 | Run& run = blob->fRuns[runIndex]; |
joshualitt | 97202d2 | 2015-04-22 13:47:02 -0700 | [diff] [blame] | 654 | // Push back a new subrun to fill and set the override descriptor |
| 655 | run.push_back(); |
| 656 | run.fOverrideDescriptor.reset(SkNEW(SkAutoDescriptor)); |
| 657 | skPaint.getScalerContextDescriptor(run.fOverrideDescriptor, |
joshualitt | fec19e1 | 2015-04-17 10:32:32 -0700 | [diff] [blame] | 658 | &fDeviceProperties, &viewMatrix, false); |
| 659 | SkGlyphCache* cache = SkGlyphCache::DetachCache(run.fTypeface, |
joshualitt | 97202d2 | 2015-04-22 13:47:02 -0700 | [diff] [blame] | 660 | run.fOverrideDescriptor->getDesc()); |
joshualitt | fcfb9fc | 2015-04-21 07:35:10 -0700 | [diff] [blame] | 661 | this->internalDrawBMPPosText(blob, runIndex, cache, skPaint, paint.getColor(), viewMatrix, |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 662 | fallbackTxt.begin(), fallbackTxt.count(), |
| 663 | fallbackPos.begin(), scalarsPerPosition, offset, clipRect); |
| 664 | SkGlyphCache::AttachCache(cache); |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 665 | } |
| 666 | |
| 667 | inline GrAtlasTextContext::BitmapTextBlob* |
| 668 | GrAtlasTextContext::setupDFBlob(int glyphCount, const SkPaint& origPaint, |
| 669 | const SkMatrix& viewMatrix, SkGlyphCache** cache, |
| 670 | SkPaint* dfPaint, SkScalar* textRatio) { |
| 671 | BitmapTextBlob* blob = fCache->createBlob(glyphCount, 1, kGrayTextVASize); |
| 672 | |
| 673 | *dfPaint = origPaint; |
joshualitt | 64c99cc | 2015-04-21 09:43:03 -0700 | [diff] [blame] | 674 | this->initDistanceFieldPaint(blob, dfPaint, textRatio, viewMatrix); |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 675 | blob->fViewMatrix = viewMatrix; |
joshualitt | fcfb9fc | 2015-04-21 07:35:10 -0700 | [diff] [blame] | 676 | Run& run = blob->fRuns[0]; |
| 677 | PerSubRunInfo& subRun = run.fSubRunInfo.back(); |
| 678 | subRun.fUseLCDText = origPaint.isLCDRenderText(); |
| 679 | subRun.fDrawAsDistanceFields = true; |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 680 | |
| 681 | *cache = this->setupCache(&blob->fRuns[0], *dfPaint, NULL, true); |
| 682 | return blob; |
| 683 | } |
| 684 | |
joshualitt | dbd3593 | 2015-04-02 09:19:04 -0700 | [diff] [blame] | 685 | void GrAtlasTextContext::onDrawText(GrRenderTarget* rt, const GrClip& clip, |
| 686 | const GrPaint& paint, const SkPaint& skPaint, |
| 687 | const SkMatrix& viewMatrix, |
| 688 | const char text[], size_t byteLength, |
| 689 | SkScalar x, SkScalar y, const SkIRect& regionClipBounds) { |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 690 | int glyphCount = skPaint.countText(text, byteLength); |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 691 | SkIRect clipRect; |
| 692 | clip.getConservativeBounds(rt->width(), rt->height(), &clipRect); |
| 693 | |
| 694 | // setup cache |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 695 | if (this->canDrawAsDistanceFields(skPaint, viewMatrix)) { |
| 696 | SkPaint dfPaint; |
| 697 | SkScalar textRatio; |
| 698 | SkGlyphCache* cache; |
| 699 | SkAutoTUnref<BitmapTextBlob> blob(this->setupDFBlob(glyphCount, skPaint, viewMatrix, &cache, |
| 700 | &dfPaint, &textRatio)); |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 701 | |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 702 | SkTDArray<char> fallbackTxt; |
| 703 | SkTDArray<SkScalar> fallbackPos; |
| 704 | SkPoint offset; |
| 705 | this->internalDrawDFText(blob, 0, cache, dfPaint, paint.getColor(), viewMatrix, text, |
| 706 | byteLength, x, y, clipRect, textRatio, &fallbackTxt, &fallbackPos, |
| 707 | &offset, skPaint); |
| 708 | SkGlyphCache::AttachCache(cache); |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 709 | if (fallbackTxt.count()) { |
joshualitt | fcfb9fc | 2015-04-21 07:35:10 -0700 | [diff] [blame] | 710 | this->fallbackDrawPosText(blob, 0, rt, clip, paint, skPaint, viewMatrix, fallbackTxt, |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 711 | fallbackPos, 2, offset, clipRect); |
| 712 | } |
joshualitt | fec19e1 | 2015-04-17 10:32:32 -0700 | [diff] [blame] | 713 | this->flush(fContext->getTextTarget(), blob, rt, skPaint, paint, clip); |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 714 | } else { |
| 715 | SkAutoTUnref<BitmapTextBlob> blob(fCache->createBlob(glyphCount, 1, kGrayTextVASize)); |
| 716 | blob->fViewMatrix = viewMatrix; |
| 717 | |
| 718 | SkGlyphCache* cache = this->setupCache(&blob->fRuns[0], skPaint, &viewMatrix, false); |
| 719 | this->internalDrawBMPText(blob, 0, cache, skPaint, paint.getColor(), viewMatrix, text, |
| 720 | byteLength, x, y, clipRect); |
| 721 | SkGlyphCache::AttachCache(cache); |
| 722 | this->flush(fContext->getTextTarget(), blob, rt, skPaint, paint, clip); |
| 723 | } |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 724 | } |
| 725 | |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 726 | void GrAtlasTextContext::onDrawPosText(GrRenderTarget* rt, const GrClip& clip, |
| 727 | const GrPaint& paint, const SkPaint& skPaint, |
| 728 | const SkMatrix& viewMatrix, |
| 729 | const char text[], size_t byteLength, |
| 730 | const SkScalar pos[], int scalarsPerPosition, |
| 731 | const SkPoint& offset, const SkIRect& regionClipBounds) { |
| 732 | int glyphCount = skPaint.countText(text, byteLength); |
| 733 | |
| 734 | SkIRect clipRect; |
| 735 | clip.getConservativeBounds(rt->width(), rt->height(), &clipRect); |
| 736 | |
| 737 | if (this->canDrawAsDistanceFields(skPaint, viewMatrix)) { |
| 738 | SkPaint dfPaint; |
| 739 | SkScalar textRatio; |
| 740 | SkGlyphCache* cache; |
| 741 | SkAutoTUnref<BitmapTextBlob> blob(this->setupDFBlob(glyphCount, skPaint, viewMatrix, &cache, |
| 742 | &dfPaint, &textRatio)); |
| 743 | |
| 744 | SkTDArray<char> fallbackTxt; |
| 745 | SkTDArray<SkScalar> fallbackPos; |
| 746 | this->internalDrawDFPosText(blob, 0, cache, dfPaint, paint.getColor(), viewMatrix, text, |
| 747 | byteLength, pos, scalarsPerPosition, offset, clipRect, |
| 748 | textRatio, &fallbackTxt, &fallbackPos); |
| 749 | SkGlyphCache::AttachCache(cache); |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 750 | if (fallbackTxt.count()) { |
joshualitt | fcfb9fc | 2015-04-21 07:35:10 -0700 | [diff] [blame] | 751 | this->fallbackDrawPosText(blob, 0, rt, clip, paint, skPaint, viewMatrix, fallbackTxt, |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 752 | fallbackPos, scalarsPerPosition, offset, clipRect); |
| 753 | } |
joshualitt | fec19e1 | 2015-04-17 10:32:32 -0700 | [diff] [blame] | 754 | this->flush(fContext->getTextTarget(), blob, rt, skPaint, paint, clip); |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 755 | } else { |
| 756 | SkAutoTUnref<BitmapTextBlob> blob(fCache->createBlob(glyphCount, 1, kGrayTextVASize)); |
| 757 | blob->fViewMatrix = viewMatrix; |
| 758 | SkGlyphCache* cache = this->setupCache(&blob->fRuns[0], skPaint, &viewMatrix, false); |
| 759 | this->internalDrawBMPPosText(blob, 0, cache, skPaint, paint.getColor(), viewMatrix, text, |
| 760 | byteLength, pos, scalarsPerPosition, offset, clipRect); |
| 761 | SkGlyphCache::AttachCache(cache); |
| 762 | this->flush(fContext->getTextTarget(), blob, rt, skPaint, paint, clip); |
| 763 | } |
| 764 | } |
| 765 | |
| 766 | void GrAtlasTextContext::internalDrawBMPText(BitmapTextBlob* blob, int runIndex, |
| 767 | SkGlyphCache* cache, const SkPaint& skPaint, |
| 768 | GrColor color, |
| 769 | const SkMatrix& viewMatrix, |
| 770 | const char text[], size_t byteLength, |
| 771 | SkScalar x, SkScalar y, const SkIRect& clipRect) { |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 772 | SkASSERT(byteLength == 0 || text != NULL); |
| 773 | |
| 774 | // nothing to draw |
| 775 | if (text == NULL || byteLength == 0) { |
| 776 | return; |
| 777 | } |
| 778 | |
| 779 | fCurrStrike = NULL; |
| 780 | SkDrawCacheProc glyphCacheProc = skPaint.getDrawCacheProc(); |
| 781 | |
| 782 | // Get GrFontScaler from cache |
| 783 | GrFontScaler* fontScaler = GetGrFontScaler(cache); |
| 784 | |
| 785 | // transform our starting point |
| 786 | { |
| 787 | SkPoint loc; |
| 788 | viewMatrix.mapXY(x, y, &loc); |
| 789 | x = loc.fX; |
| 790 | y = loc.fY; |
| 791 | } |
| 792 | |
| 793 | // need to measure first |
| 794 | if (skPaint.getTextAlign() != SkPaint::kLeft_Align) { |
| 795 | SkVector stopVector; |
| 796 | MeasureText(cache, glyphCacheProc, text, byteLength, &stopVector); |
| 797 | |
| 798 | SkScalar stopX = stopVector.fX; |
| 799 | SkScalar stopY = stopVector.fY; |
| 800 | |
| 801 | if (skPaint.getTextAlign() == SkPaint::kCenter_Align) { |
| 802 | stopX = SkScalarHalf(stopX); |
| 803 | stopY = SkScalarHalf(stopY); |
| 804 | } |
| 805 | x -= stopX; |
| 806 | y -= stopY; |
| 807 | } |
| 808 | |
| 809 | const char* stop = text + byteLength; |
| 810 | |
| 811 | SkAutoKern autokern; |
| 812 | |
| 813 | SkFixed fxMask = ~0; |
| 814 | SkFixed fyMask = ~0; |
| 815 | SkScalar halfSampleX, halfSampleY; |
| 816 | if (cache->isSubpixel()) { |
| 817 | halfSampleX = halfSampleY = SkFixedToScalar(SkGlyph::kSubpixelRound); |
| 818 | SkAxisAlignment baseline = SkComputeAxisAlignmentForHText(viewMatrix); |
| 819 | if (kX_SkAxisAlignment == baseline) { |
| 820 | fyMask = 0; |
| 821 | halfSampleY = SK_ScalarHalf; |
| 822 | } else if (kY_SkAxisAlignment == baseline) { |
| 823 | fxMask = 0; |
| 824 | halfSampleX = SK_ScalarHalf; |
| 825 | } |
| 826 | } else { |
| 827 | halfSampleX = halfSampleY = SK_ScalarHalf; |
| 828 | } |
| 829 | |
| 830 | Sk48Dot16 fx = SkScalarTo48Dot16(x + halfSampleX); |
| 831 | Sk48Dot16 fy = SkScalarTo48Dot16(y + halfSampleY); |
| 832 | |
| 833 | while (text < stop) { |
| 834 | const SkGlyph& glyph = glyphCacheProc(cache, &text, fx & fxMask, fy & fyMask); |
| 835 | |
| 836 | fx += autokern.adjust(glyph); |
| 837 | |
| 838 | if (glyph.fWidth) { |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 839 | this->bmpAppendGlyph(blob, |
| 840 | runIndex, |
| 841 | GrGlyph::Pack(glyph.getGlyphID(), |
| 842 | glyph.getSubXFixed(), |
| 843 | glyph.getSubYFixed(), |
| 844 | GrGlyph::kCoverage_MaskStyle), |
| 845 | Sk48Dot16FloorToInt(fx), |
| 846 | Sk48Dot16FloorToInt(fy), |
| 847 | color, |
| 848 | fontScaler, |
| 849 | clipRect); |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 850 | } |
| 851 | |
| 852 | fx += glyph.fAdvanceX; |
| 853 | fy += glyph.fAdvanceY; |
| 854 | } |
| 855 | } |
| 856 | |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 857 | void GrAtlasTextContext::internalDrawBMPPosText(BitmapTextBlob* blob, int runIndex, |
| 858 | SkGlyphCache* cache, const SkPaint& skPaint, |
| 859 | GrColor color, |
| 860 | const SkMatrix& viewMatrix, |
| 861 | const char text[], size_t byteLength, |
| 862 | const SkScalar pos[], int scalarsPerPosition, |
| 863 | const SkPoint& offset, const SkIRect& clipRect) { |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 864 | SkASSERT(byteLength == 0 || text != NULL); |
| 865 | SkASSERT(1 == scalarsPerPosition || 2 == scalarsPerPosition); |
| 866 | |
| 867 | // nothing to draw |
| 868 | if (text == NULL || byteLength == 0) { |
| 869 | return; |
| 870 | } |
| 871 | |
| 872 | fCurrStrike = NULL; |
| 873 | SkDrawCacheProc glyphCacheProc = skPaint.getDrawCacheProc(); |
| 874 | |
| 875 | // Get GrFontScaler from cache |
| 876 | GrFontScaler* fontScaler = GetGrFontScaler(cache); |
| 877 | |
| 878 | const char* stop = text + byteLength; |
| 879 | SkTextAlignProc alignProc(skPaint.getTextAlign()); |
| 880 | SkTextMapStateProc tmsProc(viewMatrix, offset, scalarsPerPosition); |
| 881 | |
| 882 | if (cache->isSubpixel()) { |
| 883 | // maybe we should skip the rounding if linearText is set |
| 884 | SkAxisAlignment baseline = SkComputeAxisAlignmentForHText(viewMatrix); |
| 885 | |
| 886 | SkFixed fxMask = ~0; |
| 887 | SkFixed fyMask = ~0; |
| 888 | SkScalar halfSampleX = SkFixedToScalar(SkGlyph::kSubpixelRound); |
| 889 | SkScalar halfSampleY = SkFixedToScalar(SkGlyph::kSubpixelRound); |
| 890 | if (kX_SkAxisAlignment == baseline) { |
| 891 | fyMask = 0; |
| 892 | halfSampleY = SK_ScalarHalf; |
| 893 | } else if (kY_SkAxisAlignment == baseline) { |
| 894 | fxMask = 0; |
| 895 | halfSampleX = SK_ScalarHalf; |
| 896 | } |
| 897 | |
| 898 | if (SkPaint::kLeft_Align == skPaint.getTextAlign()) { |
| 899 | while (text < stop) { |
| 900 | SkPoint tmsLoc; |
| 901 | tmsProc(pos, &tmsLoc); |
| 902 | Sk48Dot16 fx = SkScalarTo48Dot16(tmsLoc.fX + halfSampleX); |
| 903 | Sk48Dot16 fy = SkScalarTo48Dot16(tmsLoc.fY + halfSampleY); |
| 904 | |
| 905 | const SkGlyph& glyph = glyphCacheProc(cache, &text, |
| 906 | fx & fxMask, fy & fyMask); |
| 907 | |
| 908 | if (glyph.fWidth) { |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 909 | this->bmpAppendGlyph(blob, |
| 910 | runIndex, |
| 911 | GrGlyph::Pack(glyph.getGlyphID(), |
| 912 | glyph.getSubXFixed(), |
| 913 | glyph.getSubYFixed(), |
| 914 | GrGlyph::kCoverage_MaskStyle), |
| 915 | Sk48Dot16FloorToInt(fx), |
| 916 | Sk48Dot16FloorToInt(fy), |
| 917 | color, |
| 918 | fontScaler, |
| 919 | clipRect); |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 920 | } |
| 921 | pos += scalarsPerPosition; |
| 922 | } |
| 923 | } else { |
| 924 | while (text < stop) { |
| 925 | const char* currentText = text; |
| 926 | const SkGlyph& metricGlyph = glyphCacheProc(cache, &text, 0, 0); |
| 927 | |
| 928 | if (metricGlyph.fWidth) { |
| 929 | SkDEBUGCODE(SkFixed prevAdvX = metricGlyph.fAdvanceX;) |
| 930 | SkDEBUGCODE(SkFixed prevAdvY = metricGlyph.fAdvanceY;) |
| 931 | SkPoint tmsLoc; |
| 932 | tmsProc(pos, &tmsLoc); |
| 933 | SkPoint alignLoc; |
| 934 | alignProc(tmsLoc, metricGlyph, &alignLoc); |
| 935 | |
| 936 | Sk48Dot16 fx = SkScalarTo48Dot16(alignLoc.fX + halfSampleX); |
| 937 | Sk48Dot16 fy = SkScalarTo48Dot16(alignLoc.fY + halfSampleY); |
| 938 | |
| 939 | // have to call again, now that we've been "aligned" |
| 940 | const SkGlyph& glyph = glyphCacheProc(cache, ¤tText, |
| 941 | fx & fxMask, fy & fyMask); |
| 942 | // the assumption is that the metrics haven't changed |
| 943 | SkASSERT(prevAdvX == glyph.fAdvanceX); |
| 944 | SkASSERT(prevAdvY == glyph.fAdvanceY); |
| 945 | SkASSERT(glyph.fWidth); |
| 946 | |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 947 | this->bmpAppendGlyph(blob, |
| 948 | runIndex, |
| 949 | GrGlyph::Pack(glyph.getGlyphID(), |
| 950 | glyph.getSubXFixed(), |
| 951 | glyph.getSubYFixed(), |
| 952 | GrGlyph::kCoverage_MaskStyle), |
| 953 | Sk48Dot16FloorToInt(fx), |
| 954 | Sk48Dot16FloorToInt(fy), |
| 955 | color, |
| 956 | fontScaler, |
| 957 | clipRect); |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 958 | } |
| 959 | pos += scalarsPerPosition; |
| 960 | } |
| 961 | } |
| 962 | } else { // not subpixel |
| 963 | |
| 964 | if (SkPaint::kLeft_Align == skPaint.getTextAlign()) { |
| 965 | while (text < stop) { |
| 966 | // the last 2 parameters are ignored |
| 967 | const SkGlyph& glyph = glyphCacheProc(cache, &text, 0, 0); |
| 968 | |
| 969 | if (glyph.fWidth) { |
| 970 | SkPoint tmsLoc; |
| 971 | tmsProc(pos, &tmsLoc); |
| 972 | |
| 973 | Sk48Dot16 fx = SkScalarTo48Dot16(tmsLoc.fX + SK_ScalarHalf); //halfSampleX; |
| 974 | Sk48Dot16 fy = SkScalarTo48Dot16(tmsLoc.fY + SK_ScalarHalf); //halfSampleY; |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 975 | this->bmpAppendGlyph(blob, |
| 976 | runIndex, |
| 977 | GrGlyph::Pack(glyph.getGlyphID(), |
| 978 | glyph.getSubXFixed(), |
| 979 | glyph.getSubYFixed(), |
| 980 | GrGlyph::kCoverage_MaskStyle), |
| 981 | Sk48Dot16FloorToInt(fx), |
| 982 | Sk48Dot16FloorToInt(fy), |
| 983 | color, |
| 984 | fontScaler, |
| 985 | clipRect); |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 986 | } |
| 987 | pos += scalarsPerPosition; |
| 988 | } |
| 989 | } else { |
| 990 | while (text < stop) { |
| 991 | // the last 2 parameters are ignored |
| 992 | const SkGlyph& glyph = glyphCacheProc(cache, &text, 0, 0); |
| 993 | |
| 994 | if (glyph.fWidth) { |
| 995 | SkPoint tmsLoc; |
| 996 | tmsProc(pos, &tmsLoc); |
| 997 | |
| 998 | SkPoint alignLoc; |
| 999 | alignProc(tmsLoc, glyph, &alignLoc); |
| 1000 | |
| 1001 | Sk48Dot16 fx = SkScalarTo48Dot16(alignLoc.fX + SK_ScalarHalf); //halfSampleX; |
| 1002 | Sk48Dot16 fy = SkScalarTo48Dot16(alignLoc.fY + SK_ScalarHalf); //halfSampleY; |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 1003 | this->bmpAppendGlyph(blob, |
| 1004 | runIndex, |
| 1005 | GrGlyph::Pack(glyph.getGlyphID(), |
| 1006 | glyph.getSubXFixed(), |
| 1007 | glyph.getSubYFixed(), |
| 1008 | GrGlyph::kCoverage_MaskStyle), |
| 1009 | Sk48Dot16FloorToInt(fx), |
| 1010 | Sk48Dot16FloorToInt(fy), |
| 1011 | color, |
| 1012 | fontScaler, |
| 1013 | clipRect); |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1014 | } |
| 1015 | pos += scalarsPerPosition; |
| 1016 | } |
| 1017 | } |
| 1018 | } |
| 1019 | } |
| 1020 | |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 1021 | |
| 1022 | void GrAtlasTextContext::internalDrawDFText(BitmapTextBlob* blob, int runIndex, |
| 1023 | SkGlyphCache* cache, const SkPaint& skPaint, |
| 1024 | GrColor color, |
| 1025 | const SkMatrix& viewMatrix, |
| 1026 | const char text[], size_t byteLength, |
| 1027 | SkScalar x, SkScalar y, const SkIRect& clipRect, |
| 1028 | SkScalar textRatio, |
| 1029 | SkTDArray<char>* fallbackTxt, |
| 1030 | SkTDArray<SkScalar>* fallbackPos, |
| 1031 | SkPoint* offset, |
| 1032 | const SkPaint& origPaint) { |
| 1033 | SkASSERT(byteLength == 0 || text != NULL); |
| 1034 | |
| 1035 | // nothing to draw |
| 1036 | if (text == NULL || byteLength == 0) { |
| 1037 | return; |
| 1038 | } |
| 1039 | |
| 1040 | SkDrawCacheProc glyphCacheProc = origPaint.getDrawCacheProc(); |
| 1041 | SkAutoDescriptor desc; |
| 1042 | origPaint.getScalerContextDescriptor(&desc, &fDeviceProperties, NULL, true); |
| 1043 | SkGlyphCache* origPaintCache = SkGlyphCache::DetachCache(origPaint.getTypeface(), |
| 1044 | desc.getDesc()); |
| 1045 | |
| 1046 | SkTArray<SkScalar> positions; |
| 1047 | |
| 1048 | const char* textPtr = text; |
| 1049 | SkFixed stopX = 0; |
| 1050 | SkFixed stopY = 0; |
| 1051 | SkFixed origin = 0; |
| 1052 | switch (origPaint.getTextAlign()) { |
| 1053 | case SkPaint::kRight_Align: origin = SK_Fixed1; break; |
| 1054 | case SkPaint::kCenter_Align: origin = SK_FixedHalf; break; |
| 1055 | case SkPaint::kLeft_Align: origin = 0; break; |
| 1056 | } |
| 1057 | |
| 1058 | SkAutoKern autokern; |
| 1059 | const char* stop = text + byteLength; |
| 1060 | while (textPtr < stop) { |
| 1061 | // don't need x, y here, since all subpixel variants will have the |
| 1062 | // same advance |
| 1063 | const SkGlyph& glyph = glyphCacheProc(origPaintCache, &textPtr, 0, 0); |
| 1064 | |
| 1065 | SkFixed width = glyph.fAdvanceX + autokern.adjust(glyph); |
| 1066 | positions.push_back(SkFixedToScalar(stopX + SkFixedMul(origin, width))); |
| 1067 | |
| 1068 | SkFixed height = glyph.fAdvanceY; |
| 1069 | positions.push_back(SkFixedToScalar(stopY + SkFixedMul(origin, height))); |
| 1070 | |
| 1071 | stopX += width; |
| 1072 | stopY += height; |
| 1073 | } |
| 1074 | SkASSERT(textPtr == stop); |
| 1075 | |
| 1076 | // now adjust starting point depending on alignment |
| 1077 | SkScalar alignX = SkFixedToScalar(stopX); |
| 1078 | SkScalar alignY = SkFixedToScalar(stopY); |
| 1079 | if (origPaint.getTextAlign() == SkPaint::kCenter_Align) { |
| 1080 | alignX = SkScalarHalf(alignX); |
| 1081 | alignY = SkScalarHalf(alignY); |
| 1082 | } else if (origPaint.getTextAlign() == SkPaint::kLeft_Align) { |
| 1083 | alignX = 0; |
| 1084 | alignY = 0; |
| 1085 | } |
| 1086 | x -= alignX; |
| 1087 | y -= alignY; |
| 1088 | *offset = SkPoint::Make(x, y); |
| 1089 | |
| 1090 | this->internalDrawDFPosText(blob, runIndex, cache, skPaint, color, viewMatrix, text, byteLength, |
| 1091 | positions.begin(), 2, *offset, clipRect, textRatio, fallbackTxt, |
| 1092 | fallbackPos); |
| 1093 | SkGlyphCache::AttachCache(origPaintCache); |
| 1094 | } |
| 1095 | |
| 1096 | void GrAtlasTextContext::internalDrawDFPosText(BitmapTextBlob* blob, int runIndex, |
| 1097 | SkGlyphCache* cache, const SkPaint& skPaint, |
| 1098 | GrColor color, |
| 1099 | const SkMatrix& viewMatrix, |
| 1100 | const char text[], size_t byteLength, |
| 1101 | const SkScalar pos[], int scalarsPerPosition, |
| 1102 | const SkPoint& offset, const SkIRect& clipRect, |
| 1103 | SkScalar textRatio, |
| 1104 | SkTDArray<char>* fallbackTxt, |
| 1105 | SkTDArray<SkScalar>* fallbackPos) { |
| 1106 | |
| 1107 | SkASSERT(byteLength == 0 || text != NULL); |
| 1108 | SkASSERT(1 == scalarsPerPosition || 2 == scalarsPerPosition); |
| 1109 | |
| 1110 | // nothing to draw |
| 1111 | if (text == NULL || byteLength == 0) { |
| 1112 | return; |
| 1113 | } |
| 1114 | |
| 1115 | fCurrStrike = NULL; |
| 1116 | |
| 1117 | SkDrawCacheProc glyphCacheProc = skPaint.getDrawCacheProc(); |
| 1118 | GrFontScaler* fontScaler = GetGrFontScaler(cache); |
| 1119 | |
| 1120 | const char* stop = text + byteLength; |
| 1121 | |
| 1122 | if (SkPaint::kLeft_Align == skPaint.getTextAlign()) { |
| 1123 | while (text < stop) { |
| 1124 | const char* lastText = text; |
| 1125 | // the last 2 parameters are ignored |
| 1126 | const SkGlyph& glyph = glyphCacheProc(cache, &text, 0, 0); |
| 1127 | |
| 1128 | if (glyph.fWidth) { |
| 1129 | SkScalar x = offset.x() + pos[0]; |
| 1130 | SkScalar y = offset.y() + (2 == scalarsPerPosition ? pos[1] : 0); |
| 1131 | |
| 1132 | if (!this->dfAppendGlyph(blob, |
| 1133 | runIndex, |
| 1134 | GrGlyph::Pack(glyph.getGlyphID(), |
| 1135 | glyph.getSubXFixed(), |
| 1136 | glyph.getSubYFixed(), |
| 1137 | GrGlyph::kDistance_MaskStyle), |
| 1138 | x, y, color, fontScaler, clipRect, |
| 1139 | textRatio, viewMatrix)) { |
| 1140 | // couldn't append, send to fallback |
| 1141 | fallbackTxt->append(SkToInt(text-lastText), lastText); |
| 1142 | *fallbackPos->append() = pos[0]; |
| 1143 | if (2 == scalarsPerPosition) { |
| 1144 | *fallbackPos->append() = pos[1]; |
| 1145 | } |
| 1146 | } |
| 1147 | } |
| 1148 | pos += scalarsPerPosition; |
| 1149 | } |
| 1150 | } else { |
| 1151 | SkScalar alignMul = SkPaint::kCenter_Align == skPaint.getTextAlign() ? SK_ScalarHalf |
| 1152 | : SK_Scalar1; |
| 1153 | while (text < stop) { |
| 1154 | const char* lastText = text; |
| 1155 | // the last 2 parameters are ignored |
| 1156 | const SkGlyph& glyph = glyphCacheProc(cache, &text, 0, 0); |
| 1157 | |
| 1158 | if (glyph.fWidth) { |
| 1159 | SkScalar x = offset.x() + pos[0]; |
| 1160 | SkScalar y = offset.y() + (2 == scalarsPerPosition ? pos[1] : 0); |
| 1161 | |
| 1162 | SkScalar advanceX = SkFixedToScalar(glyph.fAdvanceX) * alignMul * textRatio; |
| 1163 | SkScalar advanceY = SkFixedToScalar(glyph.fAdvanceY) * alignMul * textRatio; |
| 1164 | |
| 1165 | if (!this->dfAppendGlyph(blob, |
| 1166 | runIndex, |
| 1167 | GrGlyph::Pack(glyph.getGlyphID(), |
| 1168 | glyph.getSubXFixed(), |
| 1169 | glyph.getSubYFixed(), |
| 1170 | GrGlyph::kDistance_MaskStyle), |
| 1171 | x - advanceX, y - advanceY, color, |
| 1172 | fontScaler, |
| 1173 | clipRect, |
| 1174 | textRatio, |
| 1175 | viewMatrix)) { |
| 1176 | // couldn't append, send to fallback |
| 1177 | fallbackTxt->append(SkToInt(text-lastText), lastText); |
| 1178 | *fallbackPos->append() = pos[0]; |
| 1179 | if (2 == scalarsPerPosition) { |
| 1180 | *fallbackPos->append() = pos[1]; |
| 1181 | } |
| 1182 | } |
| 1183 | } |
| 1184 | pos += scalarsPerPosition; |
| 1185 | } |
| 1186 | } |
| 1187 | } |
| 1188 | |
| 1189 | void GrAtlasTextContext::bmpAppendGlyph(BitmapTextBlob* blob, int runIndex, |
| 1190 | GrGlyph::PackedID packed, |
| 1191 | int vx, int vy, GrColor color, GrFontScaler* scaler, |
| 1192 | const SkIRect& clipRect) { |
joshualitt | ae32c10 | 2015-04-21 09:37:57 -0700 | [diff] [blame] | 1193 | Run& run = blob->fRuns[runIndex]; |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 1194 | if (!fCurrStrike) { |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1195 | fCurrStrike = fContext->getBatchFontCache()->getStrike(scaler); |
joshualitt | ae32c10 | 2015-04-21 09:37:57 -0700 | [diff] [blame] | 1196 | run.fStrike.reset(SkRef(fCurrStrike)); |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1197 | } |
| 1198 | |
| 1199 | GrGlyph* glyph = fCurrStrike->getGlyph(packed, scaler); |
joshualitt | 010db53 | 2015-04-21 10:07:26 -0700 | [diff] [blame] | 1200 | if (!glyph) { |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1201 | return; |
| 1202 | } |
| 1203 | |
| 1204 | int x = vx + glyph->fBounds.fLeft; |
| 1205 | int y = vy + glyph->fBounds.fTop; |
| 1206 | |
| 1207 | // keep them as ints until we've done the clip-test |
| 1208 | int width = glyph->fBounds.width(); |
| 1209 | int height = glyph->fBounds.height(); |
| 1210 | |
joshualitt | 2a0e9f3 | 2015-04-13 06:12:21 -0700 | [diff] [blame] | 1211 | #if 0 |
| 1212 | // Not checking the clip bounds might introduce a performance regression. However, its not |
| 1213 | // clear if this is still true today with the larger tiles we use in Chrome. For repositionable |
| 1214 | // blobs, we want to make sure we have all of the glyphs, so clipping them out is not ideal. |
| 1215 | // We could store the cliprect in the key, but then we'd lose the ability to do integer scrolls |
| 1216 | // TODO verify this |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1217 | // check if we clipped out |
| 1218 | if (clipRect.quickReject(x, y, x + width, y + height)) { |
| 1219 | return; |
| 1220 | } |
joshualitt | 2a0e9f3 | 2015-04-13 06:12:21 -0700 | [diff] [blame] | 1221 | #endif |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1222 | |
| 1223 | // If the glyph is too large we fall back to paths |
joshualitt | 010db53 | 2015-04-21 10:07:26 -0700 | [diff] [blame] | 1224 | if (glyph->fTooLargeForAtlas) { |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 1225 | this->appendGlyphPath(blob, glyph, scaler, vx, vy); |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1226 | return; |
| 1227 | } |
| 1228 | |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1229 | GrMaskFormat format = glyph->fMaskFormat; |
| 1230 | |
| 1231 | PerSubRunInfo* subRun = &run.fSubRunInfo.back(); |
| 1232 | if (run.fInitialized && subRun->fMaskFormat != format) { |
joshualitt | fec19e1 | 2015-04-17 10:32:32 -0700 | [diff] [blame] | 1233 | subRun = &run.fSubRunInfo.push_back(); |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1234 | } |
| 1235 | |
| 1236 | run.fInitialized = true; |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1237 | |
| 1238 | size_t vertexStride = get_vertex_stride(format); |
| 1239 | |
| 1240 | SkRect r; |
| 1241 | r.fLeft = SkIntToScalar(x); |
| 1242 | r.fTop = SkIntToScalar(y); |
| 1243 | r.fRight = r.fLeft + SkIntToScalar(width); |
| 1244 | r.fBottom = r.fTop + SkIntToScalar(height); |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 1245 | subRun->fMaskFormat = format; |
| 1246 | this->appendGlyphCommon(blob, &run, subRun, r, color, vertexStride, kA8_GrMaskFormat == format, |
joshualitt | ae32c10 | 2015-04-21 09:37:57 -0700 | [diff] [blame] | 1247 | glyph); |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 1248 | } |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1249 | |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 1250 | bool GrAtlasTextContext::dfAppendGlyph(BitmapTextBlob* blob, int runIndex, |
| 1251 | GrGlyph::PackedID packed, |
| 1252 | SkScalar sx, SkScalar sy, GrColor color, |
| 1253 | GrFontScaler* scaler, |
| 1254 | const SkIRect& clipRect, |
| 1255 | SkScalar textRatio, const SkMatrix& viewMatrix) { |
joshualitt | ae32c10 | 2015-04-21 09:37:57 -0700 | [diff] [blame] | 1256 | Run& run = blob->fRuns[runIndex]; |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 1257 | if (!fCurrStrike) { |
| 1258 | fCurrStrike = fContext->getBatchFontCache()->getStrike(scaler); |
joshualitt | ae32c10 | 2015-04-21 09:37:57 -0700 | [diff] [blame] | 1259 | run.fStrike.reset(SkRef(fCurrStrike)); |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 1260 | } |
| 1261 | |
| 1262 | GrGlyph* glyph = fCurrStrike->getGlyph(packed, scaler); |
joshualitt | 010db53 | 2015-04-21 10:07:26 -0700 | [diff] [blame] | 1263 | if (!glyph) { |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 1264 | return true; |
| 1265 | } |
| 1266 | |
| 1267 | // fallback to color glyph support |
| 1268 | if (kA8_GrMaskFormat != glyph->fMaskFormat) { |
| 1269 | return false; |
| 1270 | } |
| 1271 | |
| 1272 | SkScalar dx = SkIntToScalar(glyph->fBounds.fLeft + SK_DistanceFieldInset); |
| 1273 | SkScalar dy = SkIntToScalar(glyph->fBounds.fTop + SK_DistanceFieldInset); |
| 1274 | SkScalar width = SkIntToScalar(glyph->fBounds.width() - 2 * SK_DistanceFieldInset); |
| 1275 | SkScalar height = SkIntToScalar(glyph->fBounds.height() - 2 * SK_DistanceFieldInset); |
| 1276 | |
| 1277 | SkScalar scale = textRatio; |
| 1278 | dx *= scale; |
| 1279 | dy *= scale; |
| 1280 | width *= scale; |
| 1281 | height *= scale; |
| 1282 | sx += dx; |
| 1283 | sy += dy; |
| 1284 | SkRect glyphRect = SkRect::MakeXYWH(sx, sy, width, height); |
| 1285 | |
| 1286 | #if 0 |
| 1287 | // check if we clipped out |
| 1288 | SkRect dstRect; |
| 1289 | viewMatrix.mapRect(&dstRect, glyphRect); |
| 1290 | if (clipRect.quickReject(SkScalarTruncToInt(dstRect.left()), |
| 1291 | SkScalarTruncToInt(dstRect.top()), |
| 1292 | SkScalarTruncToInt(dstRect.right()), |
| 1293 | SkScalarTruncToInt(dstRect.bottom()))) { |
| 1294 | return true; |
| 1295 | } |
| 1296 | #endif |
| 1297 | |
| 1298 | // TODO combine with the above |
| 1299 | // If the glyph is too large we fall back to paths |
joshualitt | 010db53 | 2015-04-21 10:07:26 -0700 | [diff] [blame] | 1300 | if (glyph->fTooLargeForAtlas) { |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 1301 | this->appendGlyphPath(blob, glyph, scaler, SkScalarRoundToInt(sx - dx), |
| 1302 | SkScalarRoundToInt(sy - dy)); |
| 1303 | return true; |
| 1304 | } |
| 1305 | |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 1306 | PerSubRunInfo* subRun = &run.fSubRunInfo.back(); |
| 1307 | SkASSERT(glyph->fMaskFormat == kA8_GrMaskFormat); |
| 1308 | subRun->fMaskFormat = kA8_GrMaskFormat; |
| 1309 | |
| 1310 | size_t vertexStride = get_vertex_stride_df(kA8_GrMaskFormat, subRun->fUseLCDText); |
| 1311 | |
| 1312 | bool useColorVerts = !subRun->fUseLCDText; |
| 1313 | this->appendGlyphCommon(blob, &run, subRun, glyphRect, color, vertexStride, useColorVerts, |
joshualitt | ae32c10 | 2015-04-21 09:37:57 -0700 | [diff] [blame] | 1314 | glyph); |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 1315 | return true; |
| 1316 | } |
| 1317 | |
| 1318 | inline void GrAtlasTextContext::appendGlyphPath(BitmapTextBlob* blob, GrGlyph* glyph, |
| 1319 | GrFontScaler* scaler, int x, int y) { |
| 1320 | if (NULL == glyph->fPath) { |
| 1321 | SkPath* path = SkNEW(SkPath); |
| 1322 | if (!scaler->getGlyphPath(glyph->glyphID(), path)) { |
| 1323 | // flag the glyph as being dead? |
| 1324 | SkDELETE(path); |
| 1325 | return; |
| 1326 | } |
| 1327 | glyph->fPath = path; |
| 1328 | } |
| 1329 | SkASSERT(glyph->fPath); |
| 1330 | blob->fBigGlyphs.push_back(BitmapTextBlob::BigGlyph(*glyph->fPath, x, y)); |
| 1331 | } |
| 1332 | |
| 1333 | inline void GrAtlasTextContext::appendGlyphCommon(BitmapTextBlob* blob, Run* run, |
| 1334 | Run::SubRunInfo* subRun, |
| 1335 | const SkRect& positions, GrColor color, |
| 1336 | size_t vertexStride, bool useVertexColor, |
joshualitt | ae32c10 | 2015-04-21 09:37:57 -0700 | [diff] [blame] | 1337 | GrGlyph* glyph) { |
| 1338 | blob->fGlyphs[subRun->fGlyphEndIndex] = glyph; |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 1339 | run->fVertexBounds.joinNonEmptyArg(positions); |
| 1340 | run->fColor = color; |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1341 | |
| 1342 | intptr_t vertex = reinterpret_cast<intptr_t>(blob->fVertices + subRun->fVertexEndIndex); |
| 1343 | |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 1344 | if (useVertexColor) { |
joshualitt | 010db53 | 2015-04-21 10:07:26 -0700 | [diff] [blame] | 1345 | // V0 |
| 1346 | SkPoint* position = reinterpret_cast<SkPoint*>(vertex); |
| 1347 | position->set(positions.fLeft, positions.fTop); |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1348 | SkColor* colorPtr = reinterpret_cast<SkColor*>(vertex + sizeof(SkPoint)); |
| 1349 | *colorPtr = color; |
joshualitt | 010db53 | 2015-04-21 10:07:26 -0700 | [diff] [blame] | 1350 | vertex += vertexStride; |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 1351 | |
joshualitt | 010db53 | 2015-04-21 10:07:26 -0700 | [diff] [blame] | 1352 | // V1 |
| 1353 | position = reinterpret_cast<SkPoint*>(vertex); |
| 1354 | position->set(positions.fLeft, positions.fBottom); |
| 1355 | colorPtr = reinterpret_cast<SkColor*>(vertex + sizeof(SkPoint)); |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1356 | *colorPtr = color; |
joshualitt | 010db53 | 2015-04-21 10:07:26 -0700 | [diff] [blame] | 1357 | vertex += vertexStride; |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1358 | |
joshualitt | 010db53 | 2015-04-21 10:07:26 -0700 | [diff] [blame] | 1359 | // V2 |
| 1360 | position = reinterpret_cast<SkPoint*>(vertex); |
| 1361 | position->set(positions.fRight, positions.fBottom); |
| 1362 | colorPtr = reinterpret_cast<SkColor*>(vertex + sizeof(SkPoint)); |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1363 | *colorPtr = color; |
joshualitt | 010db53 | 2015-04-21 10:07:26 -0700 | [diff] [blame] | 1364 | vertex += vertexStride; |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1365 | |
joshualitt | 010db53 | 2015-04-21 10:07:26 -0700 | [diff] [blame] | 1366 | // V3 |
| 1367 | position = reinterpret_cast<SkPoint*>(vertex); |
| 1368 | position->set(positions.fRight, positions.fTop); |
| 1369 | colorPtr = reinterpret_cast<SkColor*>(vertex + sizeof(SkPoint)); |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1370 | *colorPtr = color; |
joshualitt | 010db53 | 2015-04-21 10:07:26 -0700 | [diff] [blame] | 1371 | } else { |
| 1372 | // V0 |
| 1373 | SkPoint* position = reinterpret_cast<SkPoint*>(vertex); |
| 1374 | position->set(positions.fLeft, positions.fTop); |
| 1375 | vertex += vertexStride; |
| 1376 | |
| 1377 | // V1 |
| 1378 | position = reinterpret_cast<SkPoint*>(vertex); |
| 1379 | position->set(positions.fLeft, positions.fBottom); |
| 1380 | vertex += vertexStride; |
| 1381 | |
| 1382 | // V2 |
| 1383 | position = reinterpret_cast<SkPoint*>(vertex); |
| 1384 | position->set(positions.fRight, positions.fBottom); |
| 1385 | vertex += vertexStride; |
| 1386 | |
| 1387 | // V3 |
| 1388 | position = reinterpret_cast<SkPoint*>(vertex); |
| 1389 | position->set(positions.fRight, positions.fTop); |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1390 | } |
| 1391 | |
| 1392 | subRun->fGlyphEndIndex++; |
| 1393 | subRun->fVertexEndIndex += vertexStride * kVerticesPerGlyph; |
| 1394 | } |
| 1395 | |
| 1396 | class BitmapTextBatch : public GrBatch { |
| 1397 | public: |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 1398 | typedef GrAtlasTextContext::DistanceAdjustTable DistanceAdjustTable; |
joshualitt | dbd3593 | 2015-04-02 09:19:04 -0700 | [diff] [blame] | 1399 | typedef GrAtlasTextContext::BitmapTextBlob Blob; |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1400 | typedef Blob::Run Run; |
| 1401 | typedef Run::SubRunInfo TextInfo; |
| 1402 | struct Geometry { |
joshualitt | ad802c6 | 2015-04-15 05:31:57 -0700 | [diff] [blame] | 1403 | Blob* fBlob; |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1404 | int fRun; |
| 1405 | int fSubRun; |
| 1406 | GrColor fColor; |
joshualitt | 2a0e9f3 | 2015-04-13 06:12:21 -0700 | [diff] [blame] | 1407 | SkScalar fTransX; |
| 1408 | SkScalar fTransY; |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1409 | }; |
| 1410 | |
joshualitt | ad802c6 | 2015-04-15 05:31:57 -0700 | [diff] [blame] | 1411 | static BitmapTextBatch* Create(GrMaskFormat maskFormat, int glyphCount, |
| 1412 | GrBatchFontCache* fontCache) { |
| 1413 | return SkNEW_ARGS(BitmapTextBatch, (maskFormat, glyphCount, fontCache)); |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1414 | } |
| 1415 | |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 1416 | static BitmapTextBatch* Create(GrMaskFormat maskFormat, int glyphCount, |
| 1417 | GrBatchFontCache* fontCache, |
| 1418 | DistanceAdjustTable* distanceAdjustTable, |
| 1419 | SkColor filteredColor, bool useLCDText, |
| 1420 | bool useBGR, float gamma) { |
| 1421 | return SkNEW_ARGS(BitmapTextBatch, (maskFormat, glyphCount, fontCache, distanceAdjustTable, |
| 1422 | filteredColor, useLCDText, useBGR, gamma)); |
| 1423 | } |
| 1424 | |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1425 | const char* name() const override { return "BitmapTextBatch"; } |
| 1426 | |
| 1427 | void getInvariantOutputColor(GrInitInvariantOutput* out) const override { |
| 1428 | if (kARGB_GrMaskFormat == fMaskFormat) { |
| 1429 | out->setUnknownFourComponents(); |
| 1430 | } else { |
| 1431 | out->setKnownFourComponents(fBatch.fColor); |
| 1432 | } |
| 1433 | } |
| 1434 | |
| 1435 | void getInvariantOutputCoverage(GrInitInvariantOutput* out) const override { |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 1436 | if (!fUseDistanceFields) { |
| 1437 | // Bitmap Text |
| 1438 | if (kARGB_GrMaskFormat != fMaskFormat) { |
| 1439 | if (GrPixelConfigIsAlphaOnly(fPixelConfig)) { |
| 1440 | out->setUnknownSingleComponent(); |
| 1441 | } else if (GrPixelConfigIsOpaque(fPixelConfig)) { |
| 1442 | out->setUnknownOpaqueFourComponents(); |
| 1443 | out->setUsingLCDCoverage(); |
| 1444 | } else { |
| 1445 | out->setUnknownFourComponents(); |
| 1446 | out->setUsingLCDCoverage(); |
| 1447 | } |
| 1448 | } else { |
| 1449 | out->setKnownSingleComponent(0xff); |
| 1450 | } |
| 1451 | } else { |
| 1452 | // Distance fields |
| 1453 | if (!fUseLCDText) { |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1454 | out->setUnknownSingleComponent(); |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1455 | } else { |
| 1456 | out->setUnknownFourComponents(); |
| 1457 | out->setUsingLCDCoverage(); |
| 1458 | } |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1459 | } |
| 1460 | } |
| 1461 | |
| 1462 | void initBatchTracker(const GrPipelineInfo& init) override { |
| 1463 | // Handle any color overrides |
| 1464 | if (init.fColorIgnored) { |
| 1465 | fBatch.fColor = GrColor_ILLEGAL; |
| 1466 | } else if (GrColor_ILLEGAL != init.fOverrideColor) { |
| 1467 | fBatch.fColor = init.fOverrideColor; |
| 1468 | } |
| 1469 | |
| 1470 | // setup batch properties |
| 1471 | fBatch.fColorIgnored = init.fColorIgnored; |
| 1472 | fBatch.fUsesLocalCoords = init.fUsesLocalCoords; |
| 1473 | fBatch.fCoverageIgnored = init.fCoverageIgnored; |
| 1474 | } |
| 1475 | |
| 1476 | void generateGeometry(GrBatchTarget* batchTarget, const GrPipeline* pipeline) override { |
| 1477 | // if we have RGB, then we won't have any SkShaders so no need to use a localmatrix. |
| 1478 | // TODO actually only invert if we don't have RGBA |
| 1479 | SkMatrix localMatrix; |
| 1480 | if (this->usesLocalCoords() && !this->viewMatrix().invert(&localMatrix)) { |
| 1481 | SkDebugf("Cannot invert viewmatrix\n"); |
| 1482 | return; |
| 1483 | } |
| 1484 | |
joshualitt | 62db8ba | 2015-04-09 08:22:37 -0700 | [diff] [blame] | 1485 | GrTexture* texture = fFontCache->getTexture(fMaskFormat); |
| 1486 | if (!texture) { |
| 1487 | SkDebugf("Could not allocate backing texture for atlas\n"); |
| 1488 | return; |
| 1489 | } |
| 1490 | |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 1491 | SkAutoTUnref<const GrGeometryProcessor> gp; |
| 1492 | if (fUseDistanceFields) { |
| 1493 | gp.reset(this->setupDfProcessor(this->viewMatrix(), fFilteredColor, this->color(), |
| 1494 | texture)); |
| 1495 | } else { |
| 1496 | GrTextureParams params(SkShader::kClamp_TileMode, GrTextureParams::kNone_FilterMode); |
joshualitt | eef5b3e | 2015-04-03 08:07:26 -0700 | [diff] [blame] | 1497 | |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 1498 | // This will be ignored in the non A8 case |
| 1499 | bool opaqueVertexColors = GrColorIsOpaque(this->color()); |
| 1500 | gp.reset(GrBitmapTextGeoProc::Create(this->color(), |
| 1501 | texture, |
| 1502 | params, |
| 1503 | fMaskFormat, |
| 1504 | opaqueVertexColors, |
| 1505 | localMatrix)); |
| 1506 | } |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1507 | |
| 1508 | size_t vertexStride = gp->getVertexStride(); |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 1509 | SkASSERT(vertexStride == (fUseDistanceFields ? |
| 1510 | get_vertex_stride_df(fMaskFormat, fUseLCDText) : |
| 1511 | get_vertex_stride(fMaskFormat))); |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1512 | |
| 1513 | this->initDraw(batchTarget, gp, pipeline); |
| 1514 | |
| 1515 | int glyphCount = this->numGlyphs(); |
joshualitt | ad802c6 | 2015-04-15 05:31:57 -0700 | [diff] [blame] | 1516 | int instanceCount = fInstanceCount; |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1517 | const GrVertexBuffer* vertexBuffer; |
| 1518 | int firstVertex; |
| 1519 | |
| 1520 | void* vertices = batchTarget->vertexPool()->makeSpace(vertexStride, |
| 1521 | glyphCount * kVerticesPerGlyph, |
| 1522 | &vertexBuffer, |
| 1523 | &firstVertex); |
| 1524 | if (!vertices) { |
| 1525 | SkDebugf("Could not allocate vertices\n"); |
| 1526 | return; |
| 1527 | } |
| 1528 | |
| 1529 | unsigned char* currVertex = reinterpret_cast<unsigned char*>(vertices); |
| 1530 | |
| 1531 | // setup drawinfo |
| 1532 | const GrIndexBuffer* quadIndexBuffer = batchTarget->quadIndexBuffer(); |
| 1533 | int maxInstancesPerDraw = quadIndexBuffer->maxQuads(); |
| 1534 | |
| 1535 | GrDrawTarget::DrawInfo drawInfo; |
| 1536 | drawInfo.setPrimitiveType(kTriangles_GrPrimitiveType); |
| 1537 | drawInfo.setStartVertex(0); |
| 1538 | drawInfo.setStartIndex(0); |
| 1539 | drawInfo.setVerticesPerInstance(kVerticesPerGlyph); |
| 1540 | drawInfo.setIndicesPerInstance(kIndicesPerGlyph); |
| 1541 | drawInfo.adjustStartVertex(firstVertex); |
| 1542 | drawInfo.setVertexBuffer(vertexBuffer); |
| 1543 | drawInfo.setIndexBuffer(quadIndexBuffer); |
| 1544 | |
joshualitt | 25ba7ea | 2015-04-21 07:49:49 -0700 | [diff] [blame] | 1545 | // We cache some values to avoid going to the glyphcache for the same fontScaler twice |
| 1546 | // in a row |
| 1547 | const SkDescriptor* desc = NULL; |
| 1548 | SkGlyphCache* cache = NULL; |
| 1549 | GrFontScaler* scaler = NULL; |
joshualitt | 25ba7ea | 2015-04-21 07:49:49 -0700 | [diff] [blame] | 1550 | SkTypeface* typeface = NULL; |
| 1551 | |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1552 | int instancesToFlush = 0; |
| 1553 | for (int i = 0; i < instanceCount; i++) { |
| 1554 | Geometry& args = fGeoData[i]; |
| 1555 | Blob* blob = args.fBlob; |
| 1556 | Run& run = blob->fRuns[args.fRun]; |
| 1557 | TextInfo& info = run.fSubRunInfo[args.fSubRun]; |
| 1558 | |
| 1559 | uint64_t currentAtlasGen = fFontCache->atlasGeneration(fMaskFormat); |
| 1560 | bool regenerateTextureCoords = info.fAtlasGeneration != currentAtlasGen; |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 1561 | bool regenerateColors; |
| 1562 | if (fUseDistanceFields) { |
joshualitt | fcfb9fc | 2015-04-21 07:35:10 -0700 | [diff] [blame] | 1563 | regenerateColors = !fUseLCDText && run.fColor != args.fColor; |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 1564 | } else { |
| 1565 | regenerateColors = kA8_GrMaskFormat == fMaskFormat && run.fColor != args.fColor; |
| 1566 | } |
joshualitt | 2a0e9f3 | 2015-04-13 06:12:21 -0700 | [diff] [blame] | 1567 | bool regeneratePositions = args.fTransX != 0.f || args.fTransY != 0.f; |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1568 | int glyphCount = info.fGlyphEndIndex - info.fGlyphStartIndex; |
| 1569 | |
| 1570 | // We regenerate both texture coords and colors in the blob itself, and update the |
| 1571 | // atlas generation. If we don't end up purging any unused plots, we can avoid |
| 1572 | // regenerating the coords. We could take a finer grained approach to updating texture |
| 1573 | // coords but its not clear if the extra bookkeeping would offset any gains. |
| 1574 | // To avoid looping over the glyphs twice, we do one loop and conditionally update color |
| 1575 | // or coords as needed. One final note, if we have to break a run for an atlas eviction |
| 1576 | // then we can't really trust the atlas has all of the correct data. Atlas evictions |
| 1577 | // should be pretty rare, so we just always regenerate in those cases |
joshualitt | 2a0e9f3 | 2015-04-13 06:12:21 -0700 | [diff] [blame] | 1578 | if (regenerateTextureCoords || regenerateColors || regeneratePositions) { |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1579 | // first regenerate texture coordinates / colors if need be |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1580 | bool brokenRun = false; |
joshualitt | ae32c10 | 2015-04-21 09:37:57 -0700 | [diff] [blame] | 1581 | |
| 1582 | // Because the GrBatchFontCache may evict the strike a blob depends on using for |
| 1583 | // generating its texture coords, we have to track whether or not the strike has |
| 1584 | // been abandoned. If it hasn't been abandoned, then we can use the GrGlyph*s as is |
| 1585 | // otherwise we have to get the new strike, and use that to get the correct glyphs. |
| 1586 | // Because we do not have the packed ids, and thus can't look up our glyphs in the |
| 1587 | // new strike, we instead keep our ref to the old strike and use the packed ids from |
| 1588 | // it. These ids will still be valid as long as we hold the ref. When we are done |
| 1589 | // updating our cache of the GrGlyph*s, we drop our ref on the old strike |
| 1590 | bool regenerateGlyphs = false; |
| 1591 | GrBatchTextStrike* strike = NULL; |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1592 | if (regenerateTextureCoords) { |
joshualitt | b4c507e | 2015-04-08 08:07:59 -0700 | [diff] [blame] | 1593 | info.fBulkUseToken.reset(); |
joshualitt | 25ba7ea | 2015-04-21 07:49:49 -0700 | [diff] [blame] | 1594 | |
| 1595 | // We can reuse if we have a valid strike and our descriptors / typeface are the |
| 1596 | // same |
joshualitt | 97202d2 | 2015-04-22 13:47:02 -0700 | [diff] [blame] | 1597 | const SkDescriptor* newDesc = run.fOverrideDescriptor ? |
| 1598 | run.fOverrideDescriptor->getDesc() : |
joshualitt | 25ba7ea | 2015-04-21 07:49:49 -0700 | [diff] [blame] | 1599 | run.fDescriptor.getDesc(); |
| 1600 | if (!cache || !SkTypeface::Equal(typeface, run.fTypeface) || |
| 1601 | !(desc->equals(*newDesc))) { |
| 1602 | if (cache) { |
| 1603 | SkGlyphCache::AttachCache(cache); |
| 1604 | } |
| 1605 | desc = newDesc; |
| 1606 | cache = SkGlyphCache::DetachCache(run.fTypeface, desc); |
| 1607 | scaler = GrTextContext::GetGrFontScaler(cache); |
joshualitt | ae32c10 | 2015-04-21 09:37:57 -0700 | [diff] [blame] | 1608 | strike = run.fStrike; |
joshualitt | 25ba7ea | 2015-04-21 07:49:49 -0700 | [diff] [blame] | 1609 | typeface = run.fTypeface; |
| 1610 | } |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1611 | |
joshualitt | ae32c10 | 2015-04-21 09:37:57 -0700 | [diff] [blame] | 1612 | if (run.fStrike->isAbandoned()) { |
| 1613 | regenerateGlyphs = true; |
| 1614 | strike = fFontCache->getStrike(scaler); |
| 1615 | } else { |
| 1616 | strike = run.fStrike; |
| 1617 | } |
| 1618 | } |
| 1619 | |
| 1620 | for (int glyphIdx = 0; glyphIdx < glyphCount; glyphIdx++) { |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1621 | if (regenerateTextureCoords) { |
joshualitt | ae32c10 | 2015-04-21 09:37:57 -0700 | [diff] [blame] | 1622 | size_t glyphOffset = glyphIdx + info.fGlyphStartIndex; |
| 1623 | GrGlyph* glyph; |
| 1624 | if (regenerateGlyphs) { |
| 1625 | // Get the id from the old glyph, and use the new strike to lookup |
| 1626 | // the glyph. |
| 1627 | glyph = blob->fGlyphs[glyphOffset]; |
| 1628 | blob->fGlyphs[glyphOffset] = strike->getGlyph(glyph->fPackedID, |
| 1629 | scaler); |
| 1630 | } |
| 1631 | glyph = blob->fGlyphs[glyphOffset]; |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1632 | SkASSERT(glyph); |
| 1633 | |
| 1634 | if (!fFontCache->hasGlyph(glyph) && |
| 1635 | !strike->addGlyphToAtlas(batchTarget, glyph, scaler)) { |
| 1636 | this->flush(batchTarget, &drawInfo, instancesToFlush, |
| 1637 | maxInstancesPerDraw); |
| 1638 | this->initDraw(batchTarget, gp, pipeline); |
| 1639 | instancesToFlush = 0; |
| 1640 | brokenRun = glyphIdx > 0; |
| 1641 | |
joshualitt | ae32c10 | 2015-04-21 09:37:57 -0700 | [diff] [blame] | 1642 | SkDEBUGCODE(bool success =) strike->addGlyphToAtlas(batchTarget, |
| 1643 | glyph, |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1644 | scaler); |
| 1645 | SkASSERT(success); |
| 1646 | } |
joshualitt | b4c507e | 2015-04-08 08:07:59 -0700 | [diff] [blame] | 1647 | fFontCache->addGlyphToBulkAndSetUseToken(&info.fBulkUseToken, glyph, |
| 1648 | batchTarget->currentToken()); |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1649 | |
| 1650 | // Texture coords are the last vertex attribute so we get a pointer to the |
| 1651 | // first one and then map with stride in regenerateTextureCoords |
| 1652 | intptr_t vertex = reinterpret_cast<intptr_t>(blob->fVertices); |
| 1653 | vertex += info.fVertexStartIndex; |
| 1654 | vertex += vertexStride * glyphIdx * kVerticesPerGlyph; |
| 1655 | vertex += vertexStride - sizeof(SkIPoint16); |
| 1656 | |
| 1657 | this->regenerateTextureCoords(glyph, vertex, vertexStride); |
| 1658 | } |
| 1659 | |
| 1660 | if (regenerateColors) { |
| 1661 | intptr_t vertex = reinterpret_cast<intptr_t>(blob->fVertices); |
| 1662 | vertex += info.fVertexStartIndex; |
| 1663 | vertex += vertexStride * glyphIdx * kVerticesPerGlyph + sizeof(SkPoint); |
| 1664 | this->regenerateColors(vertex, vertexStride, args.fColor); |
| 1665 | } |
| 1666 | |
joshualitt | 2a0e9f3 | 2015-04-13 06:12:21 -0700 | [diff] [blame] | 1667 | if (regeneratePositions) { |
| 1668 | intptr_t vertex = reinterpret_cast<intptr_t>(blob->fVertices); |
| 1669 | vertex += info.fVertexStartIndex; |
| 1670 | vertex += vertexStride * glyphIdx * kVerticesPerGlyph; |
| 1671 | SkScalar transX = args.fTransX; |
| 1672 | SkScalar transY = args.fTransY; |
| 1673 | this->regeneratePositions(vertex, vertexStride, transX, transY); |
| 1674 | } |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1675 | instancesToFlush++; |
| 1676 | } |
| 1677 | |
joshualitt | 2a0e9f3 | 2015-04-13 06:12:21 -0700 | [diff] [blame] | 1678 | // We my have changed the color so update it here |
| 1679 | run.fColor = args.fColor; |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1680 | if (regenerateTextureCoords) { |
joshualitt | ae32c10 | 2015-04-21 09:37:57 -0700 | [diff] [blame] | 1681 | if (regenerateGlyphs) { |
| 1682 | run.fStrike.reset(SkRef(strike)); |
| 1683 | } |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1684 | info.fAtlasGeneration = brokenRun ? GrBatchAtlas::kInvalidAtlasGeneration : |
| 1685 | fFontCache->atlasGeneration(fMaskFormat); |
| 1686 | } |
| 1687 | } else { |
| 1688 | instancesToFlush += glyphCount; |
joshualitt | b4c507e | 2015-04-08 08:07:59 -0700 | [diff] [blame] | 1689 | |
| 1690 | // set use tokens for all of the glyphs in our subrun. This is only valid if we |
| 1691 | // have a valid atlas generation |
| 1692 | fFontCache->setUseTokenBulk(info.fBulkUseToken, |
| 1693 | batchTarget->currentToken(), |
| 1694 | fMaskFormat); |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1695 | } |
| 1696 | |
| 1697 | // now copy all vertices |
| 1698 | size_t byteCount = info.fVertexEndIndex - info.fVertexStartIndex; |
| 1699 | memcpy(currVertex, blob->fVertices + info.fVertexStartIndex, byteCount); |
| 1700 | |
| 1701 | currVertex += byteCount; |
| 1702 | } |
joshualitt | 25ba7ea | 2015-04-21 07:49:49 -0700 | [diff] [blame] | 1703 | // Make sure to attach the last cache if applicable |
| 1704 | if (cache) { |
| 1705 | SkGlyphCache::AttachCache(cache); |
| 1706 | } |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1707 | this->flush(batchTarget, &drawInfo, instancesToFlush, maxInstancesPerDraw); |
| 1708 | } |
| 1709 | |
joshualitt | ad802c6 | 2015-04-15 05:31:57 -0700 | [diff] [blame] | 1710 | // The minimum number of Geometry we will try to allocate. |
| 1711 | static const int kMinAllocated = 32; |
| 1712 | |
| 1713 | // Total number of Geometry this Batch owns |
| 1714 | int instanceCount() const { return fInstanceCount; } |
| 1715 | SkAutoSTMalloc<kMinAllocated, Geometry>* geoData() { return &fGeoData; } |
| 1716 | |
| 1717 | // to avoid even the initial copy of the struct, we have a getter for the first item which |
| 1718 | // is used to seed the batch with its initial geometry. After seeding, the client should call |
| 1719 | // init() so the Batch can initialize itself |
| 1720 | Geometry& geometry() { return fGeoData[0]; } |
| 1721 | void init() { |
| 1722 | fBatch.fColor = fGeoData[0].fColor; |
| 1723 | fBatch.fViewMatrix = fGeoData[0].fBlob->fViewMatrix; |
| 1724 | } |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1725 | |
| 1726 | private: |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 1727 | BitmapTextBatch(GrMaskFormat maskFormat, int glyphCount, GrBatchFontCache* fontCache) |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1728 | : fMaskFormat(maskFormat) |
| 1729 | , fPixelConfig(fontCache->getPixelConfig(maskFormat)) |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 1730 | , fFontCache(fontCache) |
| 1731 | , fUseDistanceFields(false) { |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1732 | this->initClassID<BitmapTextBatch>(); |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1733 | fBatch.fNumGlyphs = glyphCount; |
joshualitt | ad802c6 | 2015-04-15 05:31:57 -0700 | [diff] [blame] | 1734 | fInstanceCount = 1; |
| 1735 | fAllocatedCount = kMinAllocated; |
| 1736 | } |
| 1737 | |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 1738 | BitmapTextBatch(GrMaskFormat maskFormat, int glyphCount, GrBatchFontCache* fontCache, |
| 1739 | DistanceAdjustTable* distanceAdjustTable, SkColor filteredColor, |
| 1740 | bool useLCDText, bool useBGR, float gamma) |
| 1741 | : fMaskFormat(maskFormat) |
| 1742 | , fPixelConfig(fontCache->getPixelConfig(maskFormat)) |
| 1743 | , fFontCache(fontCache) |
| 1744 | , fDistanceAdjustTable(SkRef(distanceAdjustTable)) |
| 1745 | , fFilteredColor(filteredColor) |
| 1746 | , fUseDistanceFields(true) |
| 1747 | , fUseLCDText(useLCDText) |
| 1748 | , fUseBGR(useBGR) |
| 1749 | , fGamma(gamma) { |
| 1750 | this->initClassID<BitmapTextBatch>(); |
| 1751 | fBatch.fNumGlyphs = glyphCount; |
| 1752 | fInstanceCount = 1; |
| 1753 | fAllocatedCount = kMinAllocated; |
| 1754 | SkASSERT(fMaskFormat == kA8_GrMaskFormat); |
| 1755 | } |
| 1756 | |
joshualitt | ad802c6 | 2015-04-15 05:31:57 -0700 | [diff] [blame] | 1757 | ~BitmapTextBatch() { |
| 1758 | for (int i = 0; i < fInstanceCount; i++) { |
| 1759 | fGeoData[i].fBlob->unref(); |
| 1760 | } |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1761 | } |
| 1762 | |
| 1763 | void regenerateTextureCoords(GrGlyph* glyph, intptr_t vertex, size_t vertexStride) { |
| 1764 | int width = glyph->fBounds.width(); |
| 1765 | int height = glyph->fBounds.height(); |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1766 | |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 1767 | int u0, v0, u1, v1; |
| 1768 | if (fUseDistanceFields) { |
| 1769 | u0 = glyph->fAtlasLocation.fX + SK_DistanceFieldInset; |
| 1770 | v0 = glyph->fAtlasLocation.fY + SK_DistanceFieldInset; |
| 1771 | u1 = u0 + width - 2 * SK_DistanceFieldInset; |
| 1772 | v1 = v0 + height - 2 * SK_DistanceFieldInset; |
| 1773 | } else { |
| 1774 | u0 = glyph->fAtlasLocation.fX; |
| 1775 | v0 = glyph->fAtlasLocation.fY; |
| 1776 | u1 = u0 + width; |
| 1777 | v1 = v0 + height; |
| 1778 | } |
| 1779 | |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1780 | SkIPoint16* textureCoords; |
| 1781 | // V0 |
| 1782 | textureCoords = reinterpret_cast<SkIPoint16*>(vertex); |
| 1783 | textureCoords->set(u0, v0); |
| 1784 | vertex += vertexStride; |
| 1785 | |
| 1786 | // V1 |
| 1787 | textureCoords = reinterpret_cast<SkIPoint16*>(vertex); |
| 1788 | textureCoords->set(u0, v1); |
| 1789 | vertex += vertexStride; |
| 1790 | |
| 1791 | // V2 |
| 1792 | textureCoords = reinterpret_cast<SkIPoint16*>(vertex); |
| 1793 | textureCoords->set(u1, v1); |
| 1794 | vertex += vertexStride; |
| 1795 | |
| 1796 | // V3 |
| 1797 | textureCoords = reinterpret_cast<SkIPoint16*>(vertex); |
| 1798 | textureCoords->set(u1, v0); |
| 1799 | } |
| 1800 | |
| 1801 | void regenerateColors(intptr_t vertex, size_t vertexStride, GrColor color) { |
| 1802 | for (int i = 0; i < kVerticesPerGlyph; i++) { |
| 1803 | SkColor* vcolor = reinterpret_cast<SkColor*>(vertex); |
| 1804 | *vcolor = color; |
| 1805 | vertex += vertexStride; |
| 1806 | } |
| 1807 | } |
| 1808 | |
joshualitt | 2a0e9f3 | 2015-04-13 06:12:21 -0700 | [diff] [blame] | 1809 | void regeneratePositions(intptr_t vertex, size_t vertexStride, SkScalar transX, |
| 1810 | SkScalar transY) { |
| 1811 | for (int i = 0; i < kVerticesPerGlyph; i++) { |
| 1812 | SkPoint* point = reinterpret_cast<SkPoint*>(vertex); |
| 1813 | point->fX += transX; |
| 1814 | point->fY += transY; |
| 1815 | vertex += vertexStride; |
| 1816 | } |
| 1817 | } |
| 1818 | |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1819 | void initDraw(GrBatchTarget* batchTarget, |
| 1820 | const GrGeometryProcessor* gp, |
| 1821 | const GrPipeline* pipeline) { |
| 1822 | batchTarget->initDraw(gp, pipeline); |
| 1823 | |
| 1824 | // TODO remove this when batch is everywhere |
| 1825 | GrPipelineInfo init; |
| 1826 | init.fColorIgnored = fBatch.fColorIgnored; |
| 1827 | init.fOverrideColor = GrColor_ILLEGAL; |
| 1828 | init.fCoverageIgnored = fBatch.fCoverageIgnored; |
| 1829 | init.fUsesLocalCoords = this->usesLocalCoords(); |
| 1830 | gp->initBatchTracker(batchTarget->currentBatchTracker(), init); |
| 1831 | } |
| 1832 | |
| 1833 | void flush(GrBatchTarget* batchTarget, |
| 1834 | GrDrawTarget::DrawInfo* drawInfo, |
| 1835 | int instanceCount, |
| 1836 | int maxInstancesPerDraw) { |
| 1837 | while (instanceCount) { |
| 1838 | drawInfo->setInstanceCount(SkTMin(instanceCount, maxInstancesPerDraw)); |
| 1839 | drawInfo->setVertexCount(drawInfo->instanceCount() * drawInfo->verticesPerInstance()); |
| 1840 | drawInfo->setIndexCount(drawInfo->instanceCount() * drawInfo->indicesPerInstance()); |
| 1841 | |
| 1842 | batchTarget->draw(*drawInfo); |
| 1843 | |
| 1844 | drawInfo->setStartVertex(drawInfo->startVertex() + drawInfo->vertexCount()); |
| 1845 | instanceCount -= drawInfo->instanceCount(); |
| 1846 | } |
| 1847 | } |
| 1848 | |
| 1849 | GrColor color() const { return fBatch.fColor; } |
| 1850 | const SkMatrix& viewMatrix() const { return fBatch.fViewMatrix; } |
| 1851 | bool usesLocalCoords() const { return fBatch.fUsesLocalCoords; } |
| 1852 | int numGlyphs() const { return fBatch.fNumGlyphs; } |
| 1853 | |
| 1854 | bool onCombineIfPossible(GrBatch* t) override { |
| 1855 | BitmapTextBatch* that = t->cast<BitmapTextBatch>(); |
| 1856 | |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 1857 | if (fUseDistanceFields != that->fUseDistanceFields) { |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1858 | return false; |
| 1859 | } |
| 1860 | |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 1861 | if (!fUseDistanceFields) { |
| 1862 | // Bitmap Text |
| 1863 | if (fMaskFormat != that->fMaskFormat) { |
| 1864 | return false; |
| 1865 | } |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1866 | |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 1867 | // TODO we can often batch across LCD text if we have dual source blending and don't |
| 1868 | // have to use the blend constant |
| 1869 | if (fMaskFormat != kA8_GrMaskFormat && this->color() != that->color()) { |
| 1870 | return false; |
| 1871 | } |
| 1872 | |
| 1873 | if (this->usesLocalCoords() && !this->viewMatrix().cheapEqualTo(that->viewMatrix())) { |
| 1874 | return false; |
| 1875 | } |
| 1876 | } else { |
| 1877 | // Distance Fields |
| 1878 | SkASSERT(this->fMaskFormat == that->fMaskFormat && |
| 1879 | this->fMaskFormat == kA8_GrMaskFormat); |
| 1880 | |
| 1881 | if (!this->viewMatrix().cheapEqualTo(that->viewMatrix())) { |
| 1882 | return false; |
| 1883 | } |
| 1884 | |
| 1885 | if (fFilteredColor != that->fFilteredColor) { |
| 1886 | return false; |
| 1887 | } |
| 1888 | |
| 1889 | if (fUseLCDText != that->fUseLCDText) { |
| 1890 | return false; |
| 1891 | } |
| 1892 | |
| 1893 | if (fUseBGR != that->fUseBGR) { |
| 1894 | return false; |
| 1895 | } |
| 1896 | |
| 1897 | if (fGamma != that->fGamma) { |
| 1898 | return false; |
| 1899 | } |
| 1900 | |
| 1901 | // TODO see note above |
| 1902 | if (fUseLCDText && this->color() != that->color()) { |
| 1903 | return false; |
| 1904 | } |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1905 | } |
| 1906 | |
| 1907 | fBatch.fNumGlyphs += that->numGlyphs(); |
joshualitt | ad802c6 | 2015-04-15 05:31:57 -0700 | [diff] [blame] | 1908 | |
| 1909 | // copy that->geoData(). We do this manually for performance reasons |
| 1910 | SkAutoSTMalloc<kMinAllocated, Geometry>* otherGeoData = that->geoData(); |
| 1911 | int otherInstanceCount = that->instanceCount(); |
| 1912 | int allocSize = otherInstanceCount + fInstanceCount; |
| 1913 | if (allocSize > fAllocatedCount) { |
| 1914 | while (allocSize > fAllocatedCount) { |
| 1915 | fAllocatedCount = fAllocatedCount << 1; |
| 1916 | } |
| 1917 | fGeoData.realloc(fAllocatedCount); |
| 1918 | } |
| 1919 | |
| 1920 | memcpy(&fGeoData[fInstanceCount], otherGeoData->get(), |
| 1921 | otherInstanceCount * sizeof(Geometry)); |
| 1922 | int total = fInstanceCount + otherInstanceCount; |
| 1923 | for (int i = fInstanceCount; i < total; i++) { |
| 1924 | fGeoData[i].fBlob->ref(); |
| 1925 | } |
| 1926 | fInstanceCount = total; |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1927 | return true; |
| 1928 | } |
| 1929 | |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 1930 | // TODO just use class params |
| 1931 | // TODO trying to figure out why lcd is so whack |
| 1932 | GrGeometryProcessor* setupDfProcessor(const SkMatrix& viewMatrix, SkColor filteredColor, |
| 1933 | GrColor color, GrTexture* texture) { |
| 1934 | GrTextureParams params(SkShader::kClamp_TileMode, GrTextureParams::kBilerp_FilterMode); |
| 1935 | |
| 1936 | // set up any flags |
| 1937 | uint32_t flags = 0; |
| 1938 | flags |= viewMatrix.isSimilarity() ? kSimilarity_DistanceFieldEffectFlag : 0; |
| 1939 | flags |= fUseLCDText ? kUseLCD_DistanceFieldEffectFlag : 0; |
| 1940 | flags |= fUseLCDText && viewMatrix.rectStaysRect() ? |
| 1941 | kRectToRect_DistanceFieldEffectFlag : 0; |
| 1942 | flags |= fUseLCDText && fUseBGR ? kBGR_DistanceFieldEffectFlag : 0; |
| 1943 | |
| 1944 | // see if we need to create a new effect |
| 1945 | if (fUseLCDText) { |
| 1946 | GrColor colorNoPreMul = skcolor_to_grcolor_nopremultiply(filteredColor); |
| 1947 | |
| 1948 | float redCorrection = |
| 1949 | (*fDistanceAdjustTable)[GrColorUnpackR(colorNoPreMul) >> kDistanceAdjustLumShift]; |
| 1950 | float greenCorrection = |
| 1951 | (*fDistanceAdjustTable)[GrColorUnpackG(colorNoPreMul) >> kDistanceAdjustLumShift]; |
| 1952 | float blueCorrection = |
| 1953 | (*fDistanceAdjustTable)[GrColorUnpackB(colorNoPreMul) >> kDistanceAdjustLumShift]; |
| 1954 | GrDistanceFieldLCDTextGeoProc::DistanceAdjust widthAdjust = |
| 1955 | GrDistanceFieldLCDTextGeoProc::DistanceAdjust::Make(redCorrection, |
| 1956 | greenCorrection, |
| 1957 | blueCorrection); |
| 1958 | |
| 1959 | return GrDistanceFieldLCDTextGeoProc::Create(color, |
| 1960 | viewMatrix, |
| 1961 | texture, |
| 1962 | params, |
| 1963 | widthAdjust, |
| 1964 | flags); |
| 1965 | } else { |
| 1966 | flags |= kColorAttr_DistanceFieldEffectFlag; |
| 1967 | bool opaque = GrColorIsOpaque(color); |
| 1968 | #ifdef SK_GAMMA_APPLY_TO_A8 |
| 1969 | U8CPU lum = SkColorSpaceLuminance::computeLuminance(fGamma, filteredColor); |
| 1970 | float correction = (*fDistanceAdjustTable)[lum >> kDistanceAdjustLumShift]; |
| 1971 | return GrDistanceFieldA8TextGeoProc::Create(color, |
| 1972 | viewMatrix, |
| 1973 | texture, |
| 1974 | params, |
| 1975 | correction, |
| 1976 | flags, |
| 1977 | opaque); |
| 1978 | #else |
| 1979 | return GrDistanceFieldA8TextGeoProc::Create(color, |
| 1980 | viewMatrix, |
| 1981 | texture, |
| 1982 | params, |
| 1983 | flags, |
| 1984 | opaque); |
| 1985 | #endif |
| 1986 | } |
| 1987 | |
| 1988 | } |
| 1989 | |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 1990 | struct BatchTracker { |
| 1991 | GrColor fColor; |
| 1992 | SkMatrix fViewMatrix; |
| 1993 | bool fUsesLocalCoords; |
| 1994 | bool fColorIgnored; |
| 1995 | bool fCoverageIgnored; |
| 1996 | int fNumGlyphs; |
| 1997 | }; |
| 1998 | |
| 1999 | BatchTracker fBatch; |
joshualitt | ad802c6 | 2015-04-15 05:31:57 -0700 | [diff] [blame] | 2000 | SkAutoSTMalloc<kMinAllocated, Geometry> fGeoData; |
| 2001 | int fInstanceCount; |
| 2002 | int fAllocatedCount; |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 2003 | GrMaskFormat fMaskFormat; |
| 2004 | GrPixelConfig fPixelConfig; |
| 2005 | GrBatchFontCache* fFontCache; |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 2006 | |
| 2007 | // Distance field properties |
| 2008 | SkAutoTUnref<DistanceAdjustTable> fDistanceAdjustTable; |
| 2009 | SkColor fFilteredColor; |
| 2010 | bool fUseDistanceFields; |
| 2011 | bool fUseLCDText; |
| 2012 | bool fUseBGR; |
| 2013 | float fGamma; |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 2014 | }; |
| 2015 | |
joshualitt | 9a27e63 | 2015-04-06 10:53:36 -0700 | [diff] [blame] | 2016 | void GrAtlasTextContext::flushRunAsPaths(const SkTextBlob::RunIterator& it, const SkPaint& skPaint, |
| 2017 | SkDrawFilter* drawFilter, const SkMatrix& viewMatrix, |
| 2018 | const SkIRect& clipBounds, SkScalar x, SkScalar y) { |
| 2019 | SkPaint runPaint = skPaint; |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 2020 | |
joshualitt | 9a27e63 | 2015-04-06 10:53:36 -0700 | [diff] [blame] | 2021 | size_t textLen = it.glyphCount() * sizeof(uint16_t); |
| 2022 | const SkPoint& offset = it.offset(); |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 2023 | |
joshualitt | 9a27e63 | 2015-04-06 10:53:36 -0700 | [diff] [blame] | 2024 | it.applyFontToPaint(&runPaint); |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 2025 | |
joshualitt | 9a27e63 | 2015-04-06 10:53:36 -0700 | [diff] [blame] | 2026 | if (drawFilter && !drawFilter->filter(&runPaint, SkDrawFilter::kText_Type)) { |
| 2027 | return; |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 2028 | } |
| 2029 | |
joshualitt | 9a27e63 | 2015-04-06 10:53:36 -0700 | [diff] [blame] | 2030 | runPaint.setFlags(fGpuDevice->filterTextFlags(runPaint)); |
| 2031 | |
| 2032 | switch (it.positioning()) { |
| 2033 | case SkTextBlob::kDefault_Positioning: |
| 2034 | this->drawTextAsPath(runPaint, viewMatrix, (const char *)it.glyphs(), |
| 2035 | textLen, x + offset.x(), y + offset.y(), clipBounds); |
| 2036 | break; |
| 2037 | case SkTextBlob::kHorizontal_Positioning: |
| 2038 | this->drawPosTextAsPath(runPaint, viewMatrix, (const char*)it.glyphs(), |
| 2039 | textLen, it.pos(), 1, SkPoint::Make(x, y + offset.y()), |
| 2040 | clipBounds); |
| 2041 | break; |
| 2042 | case SkTextBlob::kFull_Positioning: |
| 2043 | this->drawPosTextAsPath(runPaint, viewMatrix, (const char*)it.glyphs(), |
| 2044 | textLen, it.pos(), 2, SkPoint::Make(x, y), clipBounds); |
| 2045 | break; |
| 2046 | } |
| 2047 | } |
| 2048 | |
| 2049 | inline void GrAtlasTextContext::flushRun(GrDrawTarget* target, GrPipelineBuilder* pipelineBuilder, |
| 2050 | BitmapTextBlob* cacheBlob, int run, GrColor color, |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 2051 | SkScalar transX, SkScalar transY, const SkPaint& skPaint) { |
joshualitt | 9a27e63 | 2015-04-06 10:53:36 -0700 | [diff] [blame] | 2052 | for (int subRun = 0; subRun < cacheBlob->fRuns[run].fSubRunInfo.count(); subRun++) { |
| 2053 | const PerSubRunInfo& info = cacheBlob->fRuns[run].fSubRunInfo[subRun]; |
| 2054 | int glyphCount = info.fGlyphEndIndex - info.fGlyphStartIndex; |
| 2055 | if (0 == glyphCount) { |
| 2056 | continue; |
| 2057 | } |
| 2058 | |
| 2059 | GrMaskFormat format = info.fMaskFormat; |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 2060 | GrColor subRunColor; |
| 2061 | if (kARGB_GrMaskFormat == format) { |
| 2062 | uint8_t paintAlpha = skPaint.getAlpha(); |
| 2063 | subRunColor = SkColorSetARGB(paintAlpha, paintAlpha, paintAlpha, paintAlpha); |
| 2064 | } else { |
| 2065 | subRunColor = color; |
| 2066 | } |
joshualitt | 9a27e63 | 2015-04-06 10:53:36 -0700 | [diff] [blame] | 2067 | |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 2068 | SkAutoTUnref<BitmapTextBatch> batch; |
| 2069 | if (info.fDrawAsDistanceFields) { |
| 2070 | SkColor filteredColor; |
| 2071 | SkColorFilter* colorFilter = skPaint.getColorFilter(); |
| 2072 | if (colorFilter) { |
| 2073 | filteredColor = colorFilter->filterColor(skPaint.getColor()); |
| 2074 | } else { |
| 2075 | filteredColor = skPaint.getColor(); |
| 2076 | } |
| 2077 | bool useBGR = SkPixelGeometryIsBGR(fDeviceProperties.pixelGeometry()); |
| 2078 | float gamma = fDeviceProperties.gamma(); |
| 2079 | batch.reset(BitmapTextBatch::Create(format, glyphCount, fContext->getBatchFontCache(), |
| 2080 | fDistanceAdjustTable, filteredColor, |
| 2081 | info.fUseLCDText, useBGR, |
| 2082 | gamma)); |
| 2083 | } else { |
| 2084 | batch.reset(BitmapTextBatch::Create(format, glyphCount, fContext->getBatchFontCache())); |
| 2085 | } |
joshualitt | ad802c6 | 2015-04-15 05:31:57 -0700 | [diff] [blame] | 2086 | BitmapTextBatch::Geometry& geometry = batch->geometry(); |
| 2087 | geometry.fBlob = SkRef(cacheBlob); |
joshualitt | 9a27e63 | 2015-04-06 10:53:36 -0700 | [diff] [blame] | 2088 | geometry.fRun = run; |
| 2089 | geometry.fSubRun = subRun; |
| 2090 | geometry.fColor = subRunColor; |
joshualitt | 2a0e9f3 | 2015-04-13 06:12:21 -0700 | [diff] [blame] | 2091 | geometry.fTransX = transX; |
| 2092 | geometry.fTransY = transY; |
joshualitt | ad802c6 | 2015-04-15 05:31:57 -0700 | [diff] [blame] | 2093 | batch->init(); |
joshualitt | 9a27e63 | 2015-04-06 10:53:36 -0700 | [diff] [blame] | 2094 | |
| 2095 | target->drawBatch(pipelineBuilder, batch, &cacheBlob->fRuns[run].fVertexBounds); |
| 2096 | } |
| 2097 | } |
| 2098 | |
| 2099 | inline void GrAtlasTextContext::flushBigGlyphs(BitmapTextBlob* cacheBlob, GrRenderTarget* rt, |
joshualitt | 2a0e9f3 | 2015-04-13 06:12:21 -0700 | [diff] [blame] | 2100 | const GrPaint& grPaint, const GrClip& clip, |
| 2101 | SkScalar transX, SkScalar transY) { |
joshualitt | 9a27e63 | 2015-04-06 10:53:36 -0700 | [diff] [blame] | 2102 | for (int i = 0; i < cacheBlob->fBigGlyphs.count(); i++) { |
joshualitt | 2a0e9f3 | 2015-04-13 06:12:21 -0700 | [diff] [blame] | 2103 | BitmapTextBlob::BigGlyph& bigGlyph = cacheBlob->fBigGlyphs[i]; |
| 2104 | bigGlyph.fVx += SkScalarTruncToInt(transX); |
| 2105 | bigGlyph.fVy += SkScalarTruncToInt(transY); |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 2106 | SkMatrix translate; |
joshualitt | 2a0e9f3 | 2015-04-13 06:12:21 -0700 | [diff] [blame] | 2107 | translate.setTranslate(SkIntToScalar(bigGlyph.fVx), |
| 2108 | SkIntToScalar(bigGlyph.fVy)); |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 2109 | SkPath tmpPath(bigGlyph.fPath); |
| 2110 | tmpPath.transform(translate); |
| 2111 | GrStrokeInfo strokeInfo(SkStrokeRec::kFill_InitStyle); |
joshualitt | 9a27e63 | 2015-04-06 10:53:36 -0700 | [diff] [blame] | 2112 | fContext->drawPath(rt, clip, grPaint, SkMatrix::I(), tmpPath, strokeInfo); |
joshualitt | 1d89e8d | 2015-04-01 12:40:54 -0700 | [diff] [blame] | 2113 | } |
| 2114 | } |
joshualitt | 9a27e63 | 2015-04-06 10:53:36 -0700 | [diff] [blame] | 2115 | |
| 2116 | void GrAtlasTextContext::flush(GrDrawTarget* target, |
| 2117 | const SkTextBlob* blob, |
| 2118 | BitmapTextBlob* cacheBlob, |
| 2119 | GrRenderTarget* rt, |
| 2120 | const SkPaint& skPaint, |
| 2121 | const GrPaint& grPaint, |
| 2122 | SkDrawFilter* drawFilter, |
| 2123 | const GrClip& clip, |
| 2124 | const SkMatrix& viewMatrix, |
| 2125 | const SkIRect& clipBounds, |
joshualitt | 2a0e9f3 | 2015-04-13 06:12:21 -0700 | [diff] [blame] | 2126 | SkScalar x, SkScalar y, |
| 2127 | SkScalar transX, SkScalar transY) { |
joshualitt | 9a27e63 | 2015-04-06 10:53:36 -0700 | [diff] [blame] | 2128 | // We loop through the runs of the blob, flushing each. If any run is too large, then we flush |
| 2129 | // it as paths |
| 2130 | GrPipelineBuilder pipelineBuilder; |
| 2131 | pipelineBuilder.setFromPaint(grPaint, rt, clip); |
| 2132 | |
| 2133 | GrColor color = grPaint.getColor(); |
joshualitt | 9a27e63 | 2015-04-06 10:53:36 -0700 | [diff] [blame] | 2134 | |
| 2135 | SkTextBlob::RunIterator it(blob); |
| 2136 | for (int run = 0; !it.done(); it.next(), run++) { |
| 2137 | if (cacheBlob->fRuns[run].fDrawAsPaths) { |
| 2138 | this->flushRunAsPaths(it, skPaint, drawFilter, viewMatrix, clipBounds, x, y); |
| 2139 | continue; |
| 2140 | } |
joshualitt | 2a0e9f3 | 2015-04-13 06:12:21 -0700 | [diff] [blame] | 2141 | cacheBlob->fRuns[run].fVertexBounds.offset(transX, transY); |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 2142 | this->flushRun(target, &pipelineBuilder, cacheBlob, run, color, transX, transY, skPaint); |
joshualitt | 9a27e63 | 2015-04-06 10:53:36 -0700 | [diff] [blame] | 2143 | } |
| 2144 | |
| 2145 | // Now flush big glyphs |
joshualitt | 2a0e9f3 | 2015-04-13 06:12:21 -0700 | [diff] [blame] | 2146 | this->flushBigGlyphs(cacheBlob, rt, grPaint, clip, transX, transY); |
joshualitt | 9a27e63 | 2015-04-06 10:53:36 -0700 | [diff] [blame] | 2147 | } |
| 2148 | |
| 2149 | void GrAtlasTextContext::flush(GrDrawTarget* target, |
| 2150 | BitmapTextBlob* cacheBlob, |
| 2151 | GrRenderTarget* rt, |
| 2152 | const SkPaint& skPaint, |
| 2153 | const GrPaint& grPaint, |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 2154 | const GrClip& clip) { |
joshualitt | 9a27e63 | 2015-04-06 10:53:36 -0700 | [diff] [blame] | 2155 | GrPipelineBuilder pipelineBuilder; |
| 2156 | pipelineBuilder.setFromPaint(grPaint, rt, clip); |
| 2157 | |
| 2158 | GrColor color = grPaint.getColor(); |
joshualitt | 9a27e63 | 2015-04-06 10:53:36 -0700 | [diff] [blame] | 2159 | for (int run = 0; run < cacheBlob->fRunCount; run++) { |
joshualitt | 9bd2daf | 2015-04-17 09:30:06 -0700 | [diff] [blame] | 2160 | this->flushRun(target, &pipelineBuilder, cacheBlob, run, color, 0, 0, skPaint); |
joshualitt | 9a27e63 | 2015-04-06 10:53:36 -0700 | [diff] [blame] | 2161 | } |
| 2162 | |
| 2163 | // Now flush big glyphs |
joshualitt | 2a0e9f3 | 2015-04-13 06:12:21 -0700 | [diff] [blame] | 2164 | this->flushBigGlyphs(cacheBlob, rt, grPaint, clip, 0, 0); |
joshualitt | 9a27e63 | 2015-04-06 10:53:36 -0700 | [diff] [blame] | 2165 | } |